JEWELRY MAKING (FINE JEWELRY) NC II – TESDA COURSE MODULE

J

TESDA TRAINING REGULATIONS FOR JEWELRY MAKING (FINE JEWELRY) NC II COURSE

The TESDA JEWELRY MAKING (FINE JEWELRY) NC II Course consists of competencies along fine jewelry making that a person must achieve that will enable him/her fabricate basic jewelry components, polish jewelry, plate jewelry and perform rubber mold making.

This Qualification is packaged from the competency map of JEWELRY MAKING.

A trainee or student who has achieved this TESDA Course in JEWELRY MAKING (FINE JEWELRY) NC II is competent to be:

  • Basic Jewelry Fabricator
  • Jewelry Polisher
  • Jewelry Plater
  • Rubber mold maker

TRAINEE ENTRY REQUIREMENTS

Trainees or students wishing to gain entry into this course should satisfy the following requirements:

  • Must be physically, emotionally and mentally fit
  • Must be able to perform basic mathematical computations

This list does not include specific institutional requirements such as educational attainment, minimum age, and others that may be required of the trainees by the school or training center delivering the TVET program.

JEWELRY MAKING (FINE JEWELRY) NC II – TRAINING AND REGULATION MODULE

Course Title: JEWELRY MAKING (FINE JEWELRY)
Level: NC II
Nominal Training Duration :

(Basic Competency) 18 Hours
(Common Competency) 24 Hours
(Core Competency) 800 Hours

Total Duration: 842 Hours

This course is designed to provide the knowledge, skills, and attitude along Jewelry Making (Fine Jewelry) NC II in accordance with industry standards. It covers the basic, common and core competencies on mensurations and calculations, managing own performance, application of first-aid, application of quality and safety standards, fabricating basic jewelry components, polishing, plating and rubber mold making of jewelries.

COMPETENCIES REQUIRED IN JEWELRY MAKING (FINE JEWELRY) NC II

To obtain this TESDA course in JEWELRY MAKING (FINE JEWELRY) NC II, all units prescribed for this qualification must be achieved.

These units of competency comprising this qualification include the following:

UNIT CODE CORE COMPETENCIES (800 Hours)
DCJ731301 Fabricate basic jewelry components
DCJ731302 Polish jewelry
DCJ731303 Plate jewelry
DCJ731304 Perform rubber mold making
UNIT CODE COMMON COMPETENCIES (24  Hours)
CON311202 Observe procedures, specifications and manuals of instructions
CON311203 Perform mensurations and calculations
HCS516202 Manage own performance
ICT315202 Apply quality standards
HCS323204 Apply basic first aid
UNIT CODE BASIC COMPETENCIES (18 Hours)
500311105 Participate in workplace communication
500311106 Work in a team environment
500311107 Practice career professionalism
500311108 Practice occupational health and safety procedures

This section gives the details and contents of the units of competency required in JEWELRY MAKING (FINE JEWELRY) NC II. These units of competency are categorized into basic, common and core competencies.

CORE COMPETENCIES

This section gives the details of the contents of the core units of competency required in JEWELRY MAKING (FINE JEWELRY) NC II.

UNIT OF COMPETENCY : FABRICATE BASIC JEWELRY COMPONENTS
UNIT CODE : DCJ731301

This unit covers the knowledge, skills and attitudes in fabricating basic components of fine jewelry.

  1. Prepare requirements for fabrication
    • Jewelry design construction, dimension, composition, characteristic and finish requirements are established from predetermined specifications in accordance with organizational and client requirements
    • Fabrication and finish specifications and required outcomes as indicated in the prescribed form are confirmed and clarified as necessary with appropriate person(s) and in accordance with organizational and client’s requirements
    • Appropriate preparation and fabrication techniques are established in accordance with job order requirements and organizational procedures
    • Fabrication and finishing activities are prioritized in accordance with designated timeframes, organizational and specific requirements
    • Tools and equipment, materials and consumables are selected, requested and checked for operational effectiveness in accordance with the manufacturer’s specification and organizational procedures
  2. Perform fabrication
    • Pre-formed materials are fabricated to produce basic components using applicable fabrication activities and safe operating practices, protective equipment, and in accordance with OH&S, organizational and industry accepted methods
    • Fabricated Item is checked to ensure if construction conforms with required specifications, quality and industry/organizational standard
    • When necessary, defective items are reworked/retouched in accordance with specifications and organizational procedures
    • Fabricated Items are submitted to appropriate person(s) for quality control in accordance with industry/organizational requirements and standards
    • Proper care in handling of materials are strictly observed to ensure that quality and quantity is followed in accordance with the organizational requirements
    • Personal protective equipment (PPE) is used in accordance with job requirements and OHS requirements
    • Metal filings of same kind and quality are melted together for proper re-testing of its quality and quantity as required by organizational procedures and submitted to issuing personnel for storage and safekeeping
  3. Perform post-fabrication activities
    • Documentation is completed and processed in accordance with organizational requirements and standards
    • Notification of work completion is made to appropriate person(s) in accordance with organizational procedures
    • Work area, tools and equipment are cleaned and stored in accordance with OHS and organizational requirements

UNIT OF COMPETENCY: POLISH JEWELRY
UNIT CODE : DCJ731302

This unit covers the knowledge, skills and attitudes in polishing jewelry of fine jewelry.

  1. Prepare requirements for polishing
    • Items to be polished are checked in accordance with design specifications
    • When necessary, defective items are returned to issuing personnel in accordance with organizational procedures and design specifications
    • Item characteristics and finishing are established from predetermined specifications in accordance with organizational and design specifications
    • Finishing specifications and required outcomes are confirmed and clarified as necessary with appropriate person(s) and in accordance with organizational requirements and design specifications
    • Polishing techniques are selected in accordance with designated timeframes , organizational and specific polishing requirements
    • Materials and consumables are selected and requested in accordance with organizational requirements and in consultation with appropriate person(s).
    • Tools, machineries and equipment are selected, requested and checked for operational effectiveness in accordance with the manufacturer’s specification and organizational procedures
  2. Perform polishing
    • Polishing tools, machineries and equipment are used in accordance with manufacturers’ specifications
    • Polishing activities are performed using safe operating practices, protective equipment, and in accordance with OHS, organizational and industry standards.
    • Polished items are checked to ensure outcome conforms with design specifications, quality and organizational standards
    • Jewelry is completely polished and free of soils and abrasive compounds
  3. Perform post-polishing activities
    • Documentation is completed and processed in accordance with organizational requirements and standards
    • Finished item is turned over to issuing personnel in accordance with organizational procedures
    • Notification of work completion is made to appropriate person(s) in accordance with organizational procedures.
    • Work area, tools and equipment are cleaned and stored in accordance with OHS and organizational requirements.
    • Waste materials are collected and stored/reclaimed in accordance with organizational requirements

UNIT OF COMPETENCY : PLATE JEWELRY
UNIT CODE : DCJ731303

This unit covers the knowledge, skills and attitudes in plating jewelry of fine jewelry involving silver, gold and rhodium plating techniques.

  1. Prepare requirements for plating
    • Jewelry plating requirements are established from predetermined specifications in accordance with organizational and design specifications
    • Plating techniques are selected in accordance with specific plating/organizational requirements and designated timeframes
    • Materials and consumables are selected, requested and obtained in accordance with organizational requirements and in consultation with appropriate person(s).
    • Jewelry is subjected to quality control whether its ready for plating in accordance with organizational procedures/industry standards
    • When necessary, defective items are returned for fixing in accordance with organizational procedures/ industry standards
    • Tools, machineries and equipment are selected and used appropriate to job requirements and check for operational effectiveness in accordance with manufacturers’ specifications and organizational procedures
  2. Perform plating
    • Plating activities are performed in accordance with OHS and organizational requirements, and industry standards
    • Plating result is produced as to required specifications and in accordance with organizational requirements and industry standards
    • Finished product is quality checked for color consistency in accordance with client’s specifications/ Philippine National Standard (PNS) on Jewelry
  3. Perform post-plating activities
    • Documentation is accurately completed and processed in accordance with organizational requirements
    • Finished item is packaged/presented and stored safely in accordance with organizational requirements
    • Notification of work completion is made to appropriate person(s) in accordance with organizational procedures
    • Work area, tools and equipment are cleaned and stored in accordance with OHS and organizational requirements
    • Unused/excess materials are collected and stored/returned in accordance with organizational requirements

UNIT OF COMPETENCY : PERFORM RUBBER MOLD MAKING
UNIT CODE : DCJ731304

This unit covers the knowledge, skills and attitudes in performing rubber mold making of fine jewelry.

  1. Prepare for rubber mold making
    • Sprued prototype (metal mold), materials and consumables are requested and obtained in accordance with job requirements and organizational requirements
    • Tools, machineries and equipment are selected and checked for operational effectiveness in accordance with job requirements and manufacturer’s specifications
    • Uncured rubber sheets are prepared/cut to a required dimension to fit standard mold frame
    • Sprued prototype metal is packed with cut cleaned-uncured rubber sheet and placed inside the aluminum mold frame
    • Personal protective equipment (PPE) is used in accordance with OHS requirements
  2. Vulcanize mold frame
    • Aluminum mold frame is placed in the vulcanizing machine and tightened in accordance with standard operating procedures (SOPs)
    • Mold frame is heated as per manufacturer’s specifications
    • Vulcanized mold is cooled and removed from the vulcanizer in accordance with SOPs
    • Rubber mold is removed from the mold frame and excess rubber is trimmed
    • Mold frame is cleaned and stored in accordance with organizational procedures
  3. Cut rubber mold
    • Rubber mold is cut and separated into sections with surgical knives in accordance with the design requirements
    • Air-vents/release cuts are made in the cured rubber mold to attain complete pattern form
    • Metal prototype is removed from the rubber mold and initial testing is conducted
  4. Produce wax pattern
    • Wax injector machine is pre-heated according to manufacturer’s specifications
    • Powder/silicon mist is applied to the cured rubber mold for easy release of wax pattern
    • Pre-heated wax is injected to the rubber mold according to manufacturer’s specifications
    • Wax pattern is cooled and removed from the rubber mold in accordance with SOPs
    • Wax pattern is checked from defects and appropriate measure is undertaken to rectify defects
    • Wax pattern is cleaned and prepared for sprueing
    • Finished rubber mold is submitted to appropriate personnel for documentation and safekeeping

COMMON COMPETENCIES

UNIT OF COMPETENCY : OBSERVE PROCEDURES, SPECIFICATIONS AND MANUALS OF INSTRUCTIONS
UNIT CODE : CON311202

This unit covers the knowledge, skills and attitudes in identifying, interpreting, applying services in accordance with specifications and manuals, and storage of manuals.

  1. Identify and access specification / manuals
    • Appropriate manuals are identified and accessed as per job requirements.
    • Version and date of manual are checked to ensure that correct specification and procedure are identified.
  2. Interpret manuals
    • Relevant sections/ chapters of specifications/manuals are accessed in relation to the work to be conducted.
    • Information and procedure/s in the manual are interpreted in accordance with current industry practices.
  3. Apply information in manual
    • Manual is interpreted according to job requirements and in accordance with current industry practices.
    • Work steps are correctly identified in accordance with manufacturer’s specification.
    • (Manual) Data in the manual data are applied according to the given task.
    • All correct sequencing and adjustments are interpreted in accordance with information contained on the manual or in accordance with specifications.
  4. Store manuals
    • Manual or specifications are stored appropriately to ensure prevention of damage, ready access and updating of information when required in accordance with company requirements and current industry practices.

UNIT OF COMPETENCY: PERFORM MENSURATIONS AND CALCULATIONS
UNIT CODE : CON311203

This unit covers the knowledge, skills and attitudes on identifying and measuring objects based on the required performance standards.

  1. Select measuring instruments
    • Object or component to be measured is identified, classified and interpreted according to the appropriate regular geometric shape
    • Measuring tools are selected/identified as per object to be measured or job requirements
    • Correct specifications are obtained from relevant sources
    • Appropriate measuring instruments are selected according to job requirements
    • Alternative measuring tools are used without sacrificing cost and quality of work
  2. Carry out measurements and calculations
    • Accurate measurements are obtained according to job requirements
    • Alternative measuring tools are used without sacrificing cost and quality of work
    • Calculation needed to complete work tasks are performed using the four basic process of addition (+), subtraction (-), multiplication (x) and division (/) including but not limited to: trigonometric functions, algebraic computations
    • Calculations involving fractions, percentages and mixed numbers are used to complete workplace tasks
    • Numerical computation is self-checked and corrected for accuracy
    • Instruments are read to the limit of accuracy of the tool
    • Systems of measurement identified and converted according to job requirements/ISO
    • Workpieces are measured according to job requirements

UNIT OF COMPETENCY : MANAGE OWN PERFORMANCE
UNIT CODE : HCS516202

This unit covers the knowledge, skills and attitudes required in effectively managing own workload and quality of work.

  1. Plan for completion of own workload
    • Tasks accurately identified.
    • Priority allocated to each task.
    • Time lines allocated to each task or series of tasks.
    • Tasks deadlines known and complied with whenever possible.
    • Work schedules are known and completed within agreed time frames.
    • Work plans developed according to assignment requirements and employer policy.
    • Uncompleted work or tasks detailed and responsibility for completion passed to incoming shift or other appropriate persons.
  2. Maintain quality of own performance
    • Personal performance continually monitored against agreed performance standards.
    • Advice and guidance sought when necessary to achieve or maintain agreed standards.
    • Guidance from management applied to achieve or maintain agreed standards.
    • Standard of work clarified and agreed according to employer policy and procedures.
  3. Build credibility with customers/clients
    • Client expectations for reliability, punctuality and appearance adhered to.
    • Possible causes of client/customer dissatisfaction identified, dealt with and recorded according to employer policy.
    • Client fully informed of all relevant security matters in a timely manner and according to agreed reporting procedures.

UNIT OF COMPETENCY : APPLY BASIC FIRST AID
UNIT CODE : HCS323203

This unit covers the knowledge, skills and attitudes required to provide an initial response where First Aid is required. In this unit it is assumed that the First Aider is working under supervision and / or according to established workplace First Aid procedures and policies

  1. Assess the situation
    • Physical hazards to self and casualty’s health and safety are identified
    • Immediate risks to self and casualty’s occupational health and safety (OSH )are minimized by controlling the hazard in accordance with OSH requirements
    • Casualty’s vital signs and physical condition are assessed in accordance with workplace procedures
  2. Apply basic first aid techniques
    • First Aid management is provided in accordance with established First Aid procedures
    • Casualty is reassured in a caring and calm manner and made comfortable using available resources
    • First Aid assistance is sought from others in a timely manner and as appropriate
    • Casualty’s condition is monitored and responded to in accordance with effective First Aid principles and workplace procedures
    • Details of casualty’s physical condition, changes in conditions, management and response are accurately recorded in line with organizational procedures
    • Casualty management is finalized according to his/her needs and First Aid principles
  3. Communicate details of the incident
    • Appropriate medical assistance is requested using relevant communication media and equipment
    • Details of casualty’s condition and management activities are accurately conveyed to emergency services/relieving personnel
    • Reports to supervisors are prepared in a timely manner, presenting all relevant facts according to established company procedures

UNIT TITLE : APPLY QUALITY STANDARDS
UNIT CODE : ICT315202

This unit covers the knowledge, skills, attitudes and values needed to apply quality standards in the workplace. The unit also includes the application of relevant safety procedures and regulations, organization procedures and customer requirements.

  1. Assess quality of received materials
    • Work instruction is obtained and work is carried out in accordance with standard operating procedures.
    • Received materials are checked against workplace standards and specifications.
    • Faulty materials related to work are identified and isolated.
    • Faults and any identified causes are recorded and/or reported to the supervisor concerned in accordance with workplace procedures.
    • Faulty materials are replaced in accordance with workplace procedures.
  2. Assess own work
    • Documentation relative to quality within the company is identified and used.
    • Completed work is checked against workplace standards relevant to the task undertaken.
    • Errors are identified and isolated.
    • Information on the quality and other indicators of production performance are recorded in accordance with workplace procedures.
    • In cases of deviations from specific quality standards, causes are documented and reported in accordance with the workplace’ s standards operating procedures.
  3. Engage in quality improvement (Produce)
    • Process improvement procedures are participated in relative to workplace assignment.
    • Work is carried out in accordance with process improvement procedures.
    • Performance of operation or quality of product of service to ensure customer satisfaction is monitored.

BASIC COMPETENCIES

UNIT OF COMPETENCY : PARTICIPATE IN WORKPLACE COMMUNICATION
UNIT CODE : 500311105

This unit covers the knowledge, skills and attitudes required to gather, interpret and convey information in response to workplace requirements.

  1. Obtain and convey workplace information
    • Specific and relevant information is accessed from appropriate sources
    • Effective questioning, active listening and speaking skills are used together and convey information
    • Appropriate medium is used to transfer information and ideas
    • Appropriate non- verbal communication is used
    • Appropriate lines of communication with supervisors and colleagues are identified and followed
    • Defined workplace procedures for the location and storage of information are used
    • Personal interaction is carried out clearly and concisely
  2. Participate in workplace meetings and discussions
    • Team meetings are at ended on time
    • Own opinions are clear expressed and those of others are listened to without interruption
    • Meeting inputs are consistent with the meeting purpose and established protocols
    • Workplace interactions are conducted in a courteous manner
    • Questions about simple routine workplace procedures and matters concerning working conditions of employment are asked and responded to.
    • Meetings outcomes are interpreted and implemented
  3. Complete relevant work related documents
    • Range of forms relating to conditions of employment are completed accurately and legibly
    • Workplace data is recorded on standard workplace forms and documents
    • Basic mathematical processes are used for routine calculations
    • Errors in recording information on forms/documents are identified and properly acted upon
    • Reporting requirements to supervisor are completed according to organizational guidelines

UNIT OF COMPETENCY : WORK IN TEAM ENVIRONMENT
UNIT CODE : 500311106

This unit covers the skills, knowledge and attitudes to identify role and responsibility as a member of a team.

  1. Describe team role and scope
    • The role and objective of the team is identified from available sources of information
    • Team parameters, reporting relationships and responsibilities are identified from team discussions and appropriate external sources.
  2. Identify own role and responsibility within team
    • Individual role and responsibilities within the team environment are identified.
    • Roles and responsibility of other team members are identified and recognized.
    • Reporting relationships within team and external to team are identified.
  3. Work as a team member
    • Effective and appropriate forms of communications used and interactions undertaken with team members who contribute to known team activities and objectives.
    • Effective and appropriate contributions made to complement team activities and objectives, based on individual skills and competencies and workplace context.
    • Observed protocols in reporting using standard operating procedures.
    • Contribute to the development of team work plans based on an understanding of team’s role and objectives and individual competencies of the members.

UNIT OF COMPETENCY : PRACTICE CAREER PROFESSIONALISM
UNIT CODE : 500311107

This unit covers the knowledge, skills and attitudes in promoting career growth and advancement.

  1. Integrate personal objectives with organizational goals
    • Personal growth and work plans are pursued towards improving the qualifications set for the profession
    • Intra- and interpersonal relationships is are maintained in the course of managing oneself based on performance evaluation
    • Commitment to the organization and its goal is demonstrated in the performance of duties
  2. Set and meet work priorities
    • Competing demands are prioritized to achieve personal, team and organizational goals and objectives.
    • Resources are utilized efficiently and effectively to manage work priorities and commitments
    • Practices along economic use and maintenance of equipment and facilities are followed as per established procedures
  3. Maintain professional growth and development
    • Trainings and career opportunities are identified and availed of based on job requirements
    • Recognitions are sought/received and demonstrated as proof of career advancement
    • Licenses and/or certifications relevant to job and career are obtained and renewed

UNIT OF COMPETENCY : PRACTICE  OCCUPATIONAL HEALTH AND SAFETY PROCEDURES
UNIT CODE : 500311108

This unit covers the outcomes required to comply with regulatory and organizational requirements for occupational health and safety.

  1. Identify hazards and risks
    • Safety regulations and workplace safety and hazard control practices and procedures are clarified and explained based on organization procedures
    • Hazards/risks in the workplace and their corresponding indicators are identified to minimize or eliminate risk to co-workers, workplace and environment in accordance with organization procedures
    • Contingency measures during workplace accidents, fire and other emergencies are recognized and established in accordance with organization procedures
  2. Evaluate hazards and risks
    • Terms of maximum tolerable limits which when exceeded will result in harm or damage are identified based on threshold limit values (TLV)
    • Effects of the hazards are determined
    • OHS issues and/or concerns and identified safety hazards are reported to designated personnel in accordance with workplace requirements and relevant workplace OHS legislation
  3. Control hazards and risks
    • Occupational Health and Safety (OHS) procedures for controlling hazards/risks in workplace are consistently
      followed
    • Procedures for dealing with workplace accidents, fire and emergencies are followed in accordance with organization OHS policies
    • Personal protective equipment (PPE) is correctly used in accordance with organization OHS procedures and practices
    • Appropriate assistance is provided in the event of a workplace emergency in accordance with established organization protocol
  4. Maintain OHS awareness
    • Emergency-related drills and trainings are participated in as per established organization guidelines and procedures
    • OHS personal records are completed and updated in accordance with workplace requirements

DEFINITION OF TERMS

  • Alloy Combination of homogenized metals. Base metal mixed with precious ore to make it workable, harden it, or change its color
  • Annealing metal Is a heat process whereby a metal is heated to a specific temperature/color and then allowed to cool slowly. This softens the metal which means it can be cut and shaped more easily.
  • Antiquing Process of darkening recessed areas of to enhance the visibility of engraving
  • Assay Process of establishing purity of gold, silver and other alloys
  • Bail Connector at the top of a pendant. Enables pendant to hang from a chain or jumpring.
  • Basse-taille (bass-tie) Technique of applying glass enamel to a metal surface that has been engraved deeply enough to hold the enamel when heated and has sides high enough to keep the enamel colors separate.
  • Bezel setting The oldest and most basic gemstone setting, derived from the French word “Biseau” meaning chamfered. A collar style setting for a gemstone that offers more protection of softer or delicate minerals such as opal.
  • Carre Setting Is where the stone is seated directly over a light well, and the stone is set by raising (hammering) four “spurs” with a “graver” tool.
  • Carat Carat is a number from 1 to 24 that designates the percentage of pure gold in a sample of gold alloy. 24 carat represents pure gold. 18 carat indicates that 18/24 % or 75% of that sample is pure gold and the remainder is made up of metals other than gold
  • Casting Method of shaping metal by melting and pouring into hollow molds. Less dense than wrought metals and requires additional polishing and finishing
  • Channel setting Are primarily used to set faceted gemstones that are straight-sided, or quadrilateral in shape (baguette or princess cut)
  • Electro-plating Electro chemical process of applying one metal to the surface of another.
  • Engraving Process of decorating metal by gouging a design into its surface
  • Gold Plating Is a method of depositing a thin layer of gold on the surface of other metal, most often copper or silver. It is often used in electronics, to provide a corrosion-resistant electrically conductive layer on copper, typically in electrical connectors and printed circuit boards.
  • Harden Hardening is the process of making a jewelry component more stiff and permanent. This can be accomplished in a variety of ways including hammering and work hardening.
  • Invisible setting Setting style where rows of square cut gemstones rest flush edge to edge; all within a metal border or frame, with no metal separating individual gems
  • Jewelry Wire Jewelry wire is soft wire used to make jewelry. Jewelry wire can be brass, copper, gold, sterling silver, fine silver, gold-filled and/or gold and silver plated wire.
  • Jig A jig is a jewelry-making tool with a series of pegs used to form or shape wire. The most popular brand of jigs is the WigJig brand.
  • Mounting Device that holds a gem in place
  • Oxidation Chemical process to blacken or tarnish. Sulphur and oxygen is used on silver.
  • Pave setting Is a tight grouping of identically sized stones laid across a flat, or convex surface, from the French word for “paved.” The stones are held in place using three to six raised beads per stone. Plating Is a surface covering in which a metal is deposited on a conductive surface. Plating is used to decorate objects, for corrosion inhibition, to improve solderability, to harden, to improve wearability, to reduce friction, to improve paint adhesion, to alter conductivity, for radiation shielding, and for other purposes. Jewelry typically uses plating to give a silver or gold finish.
  • Polishing Polishing is the process of smoothing the surface of an object. With jewelry wire polishing results in a shiny appearance and can remove minor tool marks or blemishes. Frequently polishing involves using a mildly abrasive polishing compound to remove a thin layer of material.
  • Prong setting The most common variety for faceted gemstones is a prong setting, with either 3 or 4 prongs that hold the stone in place. This type of setting exposes the maximum amount of light to the sides and bottom (pavilion).
  • Precious metal Metals valued for their color, malleability, and rarity; gold, silver and platinum
  • Quenching Quenching is a process for heat treating metals to change its hardness. This process involves heating the metal to a high temperature and then rapidly cooling it by dipping it in a liquid bath made of oil or water.
  • Rhodium Is a sheen of white metal. It is the rarest of all non-radioactive metals on Earth. The most expensive metal and the best in resistance to corrosion and tarnish under most environmental condition.
  • Setting Method by which a stone is held into a mounting.
  • Soldering Technique used in making and repairing jewelry whereby two pieces of metal are joined when a molten metal with a lower melting point than the two metals being joined is used.
  • Stamping Using a die set to cut or emboss metal with a mark
  • Tiffany setting Usually round and elevated setting with six long slender prongs that flare from the base. Commonly used for large stones such as diamond solitaires
  • Tin A malleable semi-precious silvery metal that resists oxidation. Malleable at ordinary temperatures, but brittle when heated, tin acts as an agent in numerous alloys
  • Vise A vise is a tool used for gripping and holding components very securely. Vises are often fastened to a table or other sturdy base.
  • White gold Gold alloy made of nickel; sometimes contains palladium or zinc

20 Comments