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Job Description
Fabricate, finish, or evaluate the quality of gems and diamonds used in jewelry or industrial tools.
Job Details
- The SOC (Standard Occupational Classification) code is 51-9071.06
☝️ Information based on the reference occupation “Gem and Diamond Workers”.
Also Known As…
- Gem and Diamond Workers
- Quality Control Specialist
- Lapidarist
- Gemologist
- Facetor
- Diamond Setter
- Diamond Sawer
- Diamond Polisher
- Diamond Picker
- Diamond Grader
- Diamond Cutter
- Stone Setter Apprentice
- Spotter
- Sapphire Stylus Grinder
- Phonograph Needle Tip Maker
- Pearl Restorer
- Pearl Peller
- Pearl Cutter
- Oliving Machine Operator
- Lathe Operator
- Lapidary Apprentice
- Lapidary
- Jewelry Designer
- Jewelry Cutter
- Jeweler
- Jewel Setter
- Jewel Sawyer
- Jewel Blocker and Sawyer
- Jewel Bearing Maker
- Grader
- Girdler
- Gem Stone Cutter
- Gem Expert
- Gem Cutter
- Gem Carver
- Diamond Sorter
- Diamond Sizer and Grader
- Diamond Setter Apprentice
- Diamond Selector
- Diamond Mounter
- Diamond Driller
- Diamond Die Polisher
- Diamond Die Driller
- Diamond Cleaver
- Diamond Cleaner
- Diamond Assorter
- Brilliandeer Lopper
- Bench Jeweler
Tasks for “Lapidarist”
- Place stones in clamps on polishing machines and polish facets of stones, using felt-covered or canvas-covered polishing wheels and polishing compounds such as tripoli and rouge.
- Replace, true, and sharpen blades, drills, and plates.
- Lap girdles on rough diamonds, using diamond girdling lathes.
- Assign polish, symmetry, and clarity grades to stones, according to established grading systems.
- Split gems along pre-marked lines to remove imperfections, using blades and jewelers' hammers.
- Hold stones, gems, dies, or styluses against rotating plates, wheels, saws, or slitters to cut, shape, slit, grind, or polish them.
- Sort rough diamonds into categories based on shape, size, color, and quality.
- Secure gems or diamonds in holders, chucks, dops, lapidary sticks, or blocks for cutting, polishing, grinding, drilling, or shaping.
- Examine diamonds or gems to ascertain the shape, cut, and width of cut stones, or to select the cuts that will result in the biggest, best quality stones.
- Locate and mark drilling or cutting positions on stones or dies, using diamond chips and power hand tools.
- Examine gem surfaces and internal structures, using polariscopes, refractometers, microscopes, and other optical instruments, to differentiate between stones, to identify rare specimens, or to detect flaws, defects, or peculiarities affecting gem values.
- Select shaping wheels for tasks, and mix and apply abrasives, bort, or polishing compounds.
- Secure stones in metal mountings, using solder.
- Regrind drill points, and advance drill cutting points according to specifications for channel depths and shapes.
- Measure sizes of stones' bore holes and cuts to ensure adherence to specifications, using precision measuring instruments.
- Estimate wholesale and retail value of gems, following pricing guides, market fluctuations, and other relevant economic factors.
- Dismantle lapping, boring, cutting, polishing, and shaping equipment and machinery to clean and lubricate it.
- Examine gems during processing to ensure accuracy of angles and positions of cuts or bores, using magnifying glasses, loupes, or shadowgraphs.
- Immerse stones in prescribed chemical solutions to determine specific gravities and key properties of gemstones or substitutes.
- Regulate the speed of revolutions and reciprocating actions of drilling mechanisms.
- Identify and document stones' clarity characteristics, using plot diagrams.
- Advise customers and others on the best use of gems to create attractive jewelry items.
Related Technology & Tools
- Jewelers kits
- Trim saws
- Digital polariscopes
- Mini hand clamps
- Mini drills
- Jewelers' loupes
- Glass cutting saws
- Ultraviolet UV lights
- Lapidary slitters
- Digital micrometers
- Crack hammers
- Cross peen hammers
- Spectrophotometers
- Digital still cameras
- Bead drilling vises
- Ultrasonic cleaners
- Belt sanders
- Inspection microscopes
- Angle grinders
- Vibratory tumblers
- Cutting laps
- Ring saws
- Laser engraving tools
- Steam cleaners
- Diamond girding lathes
- Diamond saws
- Rock picks
- Piezo microtorches
- Chipping hammers
- Stone polishers
- Bench refractometers
- Sphere machines
- Handheld magnifiers
- Grinders
- Optically magnified facet machines
- Specific gravity liquid sets
- Precision file sets
- Glass bevelers
- Arbors
- Thermal conductivity testers
- Mini bench vises
- Jewelers' hammers
- Diamond grinders
- Vibrating laps
- Lapidary units
- Polishing wheels
- Gem drills
- Polishing laps
- Digital balances
- Glass polishers
- Faceting machines
- Digital calipers
- Jewelers' mandrels
- Revolving saws
- Precision rulers
- Precision tape measures
- Inventory tracking software
- GemCad
- Business accounting software
- Gem identification databases
- Web browser software
- Jewelry design software
- Spectrophotometer analysis software