Gem and Diamond Workers

Split, saw, cut, shape, polish, or drill gems and diamonds used in jewelry or industrial tools.

Job Task

• Locates and marks drilling position on surface of diamond dies, using diamond chip and power hand drill.
• Laps girdle on rough diamonds, using diamond girdling lathe.
• Splits gem along premarked lines to remove imperfections, using blade and jeweler's hammer.
• Positions gem or diamond against edge of revolving saw, lathe saw, or lapidary slitter to cut, block, or slit stone.
• Lubricates, dismantles, and cleans lapping, boring, cutting, polishing, and shaping equipment and machinery.
• Replaces, trues, and sharpens blades, drills, and plates.
• Examines gem during processing to ensure accuracy of angle and position of cut or bore, using magnifying glass, loupe, or shadowgraph.
• Secures gem or diamond in holder, chuck, dop, lapidary stick, or block for cutting, polishing, grinding, drilling, or shaping.
• Holds stone, gem, die, or stylus, attached to holder or lapidary stick, against rotating plates or wheels to shape, grind, and polish.
• Bores, laps, and polishes holes in industrial diamonds used for dies, using drill, lathe, lapping machine, and hand tools.
• Grinds, drills, and finishes jewel bearings for use in precision instruments, such as compasses and chronometers.
• Measures size of stone's bore holes and cuts to ensure adherence to specifications, using precision measuring instruments.
• Examines diamond or gem to determine shape, cut, and width of stone.
• Selects shaping wheel, mixes, and applies abrasive, bort, or polishing compound.

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