- Alpha Watch Company
 - Manhattan - manufacturer and importer of wholesale watches for retailers and vendors, including novelty items and customised logos for promotions. - American Diamond Wholesalers
- Manhattan - Family-owned business specialising in supplying nationally known chains and speciality stores. All sales certified with GIA or IGI certificate.
- Ball
- Lawrence - maker of self-powered micro gas light watches.
- Bayco Gem Corp
- Manhattan - Designs and manufactures jewellery pieces for retailers.
- Bulova
- Woodside - Distributor and marketer of watches and clocks under the Bulova, Caravelle, and Accutron brands.
- Carolina
- Manhattan - Offers a range of hand-crafted necklaces, bracelets, earrings, and rings.
- Church & Company
- Toms River - Manufacturer and supplier of semiprecious and gold jewellery, signet rings, and engraving services.
- Claimlink Nation Jewelry Replacement Service
- Red Bank - Replaces fine jewellery, diamonds, and watches.
- David Birnbaum - Rockefeller Plaza
- Manhattan - Private jewellery salon.
- DRS, Inc.
- Manhattan - Findings and tools for the jeweller and watchmaker including wire, solder, settings, scales, diamond and gold testers, and cleaning and polishing machines.
- First Class Imports
- Manhattan - Supplying 14K and 18K gold designs.
- G&W Castings Inc.
- Manhattan - Precision silver, platinum and gold casting for the jewellery trade.
- J.B. Star
- Manhattan - Designs and manufacturers wedding and engagement jewellery of gold, platinum, diamonds, saphires and rubies.
- Jewelers of America
- Manhattan - National association for retail jewellers.
- Jewelry Information Center
- Manhattan
- Kassoy
- Manhattan - Supplier of scales, loupes, testers, cleaners, and gemological equipment.
- Leshem Diamond Services
- Manhattan - Wholesale company.
- Magic Novelty Co. Inc.
- Manhattan - Manufacturer and distributor of jewellery findings.
- New York Diamond Exchange
- Manhattan - Offers information on wedding and engagement jewellery.
- OTC International, Ltd.
- Manhattan - Wholesaler, importer and manufacturer of gold, silver, cameo, semi-precious gemstone, and diamond accent jewellery, as well as collectible giftware and watches.
- Provident Loan Society of New York, The
- Manhattan - Not-for-profit lending organisation providing funds to individuals upon pledge of diamond and gold jewellery.
- Quality Casting Inc.
- Manhattan - Provides contract casting for the jewellery manufacturing community.
- Rapaport Information Services
- Manhattan - Site from Rapaport Information Services, publishers of the Rapaport Diamond Report. Site includes diamond and jewellery trade and consumer information and chat.
- Rhinestone Jewelry
- Brooklyn - Fine advertising and speciality items made with Austrian crystals.
- Robert Rose Jewelry
- Manhattan - Designs and manufactures jewellery for department and speciality stores.
- Rocket Jewelry Box Inc.
- Bronx - Offers packaging and display products.
- Romanofsky, Peter
- Newark - Sells platinum casting machines, vacuum mixer machines, CAD/CAM, reverse engineering, digitizers, & precious metal detection systems.
- Rudolf Erdel Platinum
- Manhattan - Offers designer jewellery in platinum.
- Seventh Sense
- Bellmore - Specialising in youth, fashion, resort, beach, and souvenir jewellery.
- Suna Bros.
- Manhattan - Manufactures gold, diamond, and platinum jewellery.
- Variety Gem
- Manhattan - Offers traditional bridal and fashion jewellery in diamond, emerald, ruby, sapphire, and semi-precious stones.
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