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• Home
• About Us
• Services
• Policy & Guarantee
• Fine Jewelry
• Diamonds

High quality rare and large diamonds experts
Offering over 50,000 GIA certified loose diamonds

Selling diamonds online since 1999

We are family owned jewelry manufacturers and master diamond cutters with multi-generation experience in the wholesale jewelry industry. We specialize in high quality, gem lab. certified-diamonds. Since 1999 we have been using the Internet to offer our exceptional service and products directly to the public at wholesale prices with a perfect record. Our main office and factory location are in the NY Diamond District (Click for Location Map).

Our diamonds are polished from our own rough to fit our clients' requirements.
We import and sell loose diamonds and precious gems.
We cut, polish, and repair diamonds.
We ensure that all our diamonds originate from socially and environmentally responsible sources.
We guarantee the lowest prices anywhere for the same quality merchandise.
We are a member of the Better Business Bureau (A+ Rated) and Jewelers Vigilance Committee.

We are Jewelry manufacturers and master diamond cutters with multi-generation experience in the wholesale jewelry industry. Our dedicated staff includes jewelry professionals with over 30 years experience and Gemological Institute of America (GIA) graduates in Fine Jewelry Consultation and Diamond Grading. Our resources stretch worldwide. #1 Diamond Source is a member of the Better Business Bureau, Jewelers Vigilance Committee and a registered StopBloodDiamonds.org Jeweler. We sell only non-conflict diamonds.

Master Diamond Cutters Diamond Jewelry Manufacturing Corporate Factory & Office Building

Past Customer Testimonials

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