Industry: 3915—Jewelers' Findings and Materials, and Lapidary Work
Establishments primarily engaged in manufacturing unassembled jewelry parts and stock shop products, such as sheet, wire, and tubing; and establishments of lapidaries primarily engaged in cutting, slabbing, tumbling, carving, engraving, polishing or faceting stones from natural or manmade precious or semiprecious gem raw materials, either for sale or on a contract basis for the trade; in recutting, repolishing, and setting gem stones; or in cutting, drilling, and otherwise preparing jewels for instruments, dies, watches, chronometers, and other industrial uses. This industry includes the drilling, sawing, and peeling of real or cultured pearls. Establishments primarily engaged in manufacturing synthetic stones for gem stones and industrial use are classified in Industry 3299, and those manufacturing artificial pearls are classified in Industry 3961.

Diamond cutting and polishingJewelry soldering for the trade
Diamond points for phonograph needlesLapidary work, contract and other
Jewel bearings, syntheticMachine chain, platinum or karat gold
Jewel cutting, drilling, polishing, recutting, or settingPearls: drilling, sawing or peeling of
Jewel preparing: for instruments, tools, watches, and jewelryPin stems (jewelry findings)
Jewelers' findings and materialsSoldering for the jewelry trade
Jewelry parts, unassembledStones: preparation of real and imitation gems for settings
Jewelry polishing for the trade
Codes Titles Number of US Businesses
3915Jewelers' Materials and Lapidary Work684
391500Jewelers' materials and lapidary work190
39150000Jewelers' materials and lapidary work190
391501Jewelers' findings and materials199
39150100Jewelers' findings and materials52
39150101Gems, real and imitation: preparation for settings24
39150102Jewel bearings, synthetic5
39150103Jewel preparing: instruments, tools, watches, and jewelry46
39150104Jewelers' castings48
39150105Jewelry parts, unassembled21
39150106Machine chain, platinum or karat gold2
39150107Pin stems1
391502Lapidary work and diamond cutting and polishing294
39150200Lapidary work and diamond cutting and polishing30
39150201Diamond cutting and polishing104
39150202Jewel cutting, drilling, polishing, recutting, or setting111
39150203Jewelry polishing for the trade9
39150204Jewelry soldering for the trade6
39150205Lapidary work, contract or other33
39150206Pearl drilling, sawing or peeling1