Personal Attention: Huge Selection:

Finest Service:

Members:

Recent Testimonials:
Early Testimonials:


Consult with our GIA Gemologist


We want to help you find the perfect GIA certified diamond and custom set your loose diamond choice in our own factory to your exact specifications at a much lower cost.

  • bullet Please call us directly and talk to a GIA Graduate Gemologist that will be happy to assist you (toll-free at 1-877-968-7342).
  • bullet Or, use any of the forms below to ask questions or request more information.
Special Order Information

Loose Diamond Information Request

We have a huge inventory of over 50,000 GIA certified loose diamonds. All of our diamonds are conflict free diamonds and guaranteed to originate from ethical and socially responsible sources.

  • bulletYou can check our inventory directly for available stones with specific parameters.
  • bullet Or, request more information and submit a custom request with the form below.
Loose Diamond Information Request Submit Request

Custom Design Jewelry Request

If you can describe it - We can custom make it for less.

  • bullet You can directly view our popular engagement ring styles.
  • bullet Or, submit a custom request with the form below.
Special Order Request Form Submit Request

Inquire about Selling Your Diamonds and Used Diamond Jewelry

We buy used loose diamonds and secondhand diamond jewelry. We pay quick cash for your old diamonds or engagement ring sitting in your home or bank vault.

Information to Sell Your Loose Diamond Submit Request

Ask about our Loose Diamonds Polishing and Repair Service

We are diamond cutters, importers, and jewelry manufacturers. We custom cut diamonds and re-polish or fix pre-owned diamonds to optimize their look and value.

Information Re-Cut Your Loose Diamond Submit Request

View Feedback Past Customer Testimonials

CORPORATE OFFICE*: #1 Diamond Source 36 W. 47th St. New York, NY 10036

OFFICE HOURS: M - F 9AM - 6PM (EST) By Appointment

* Selling at wholesale to the trade and retail to the public.

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Copyright © 2015 #1 Diamond Source
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