Wholesale Diamonds Source for Loose Diamonds

We are master loose diamond cutters with multi-generation experience in the wholesale diamond jewelry industry. #1 Diamond Source only sells natural diamonds that are laboratory certified and our GIA Graduate Gemologist provides personal guidance on your diamond purchase. Our company sells diamonds loose or we can custom set your diamond choice at our in-house factory.  We also offer custom diamond cutting and repair service on all cuts, shapes and sizes and provide free consultation and expert advice on polished and rough diamonds. High quality rare and large diamonds is our specialty.

We are “A+” rated by the Better Business Bureau and are members of the Jewelers Vigilance Committee. On the internet since 1998, we’ve offered our exceptional service and products online directly to the public at wholesale prices. All our diamonds come with an independent lab certificate and a written guarantee to be conflict free diamonds originating from ethical and socially responsible sources.

Our huge inventory with over 50,000 stones includes colorless and near colorless diamonds (GIA: D to J).  Our loose diamonds range in clarity grade from Flawless to “Slightly Included” (GIA: FL to SI2).  The Diamond shapes that we offer are: Round, Oval, Princess, Pear shape, Marquise, Heart shape, Radiant, Cushion, Emerald cut, and Asscher (square Emerald).  We can custom supply most other shapes upon request. #1 Diamond Source does not sell artificially treated or clarity enhanced diamonds.

Ideal and GIA Excellent cut diamonds

"Hearts & Arrows"  and
 

   GIA "Excellent cut" diamonds

Better Business Bureau (A+ Rated) & Jewelers Vigilance Committee members.

• Our company fully support the United Nations "Kimberley Process"  resolution.
  - We sell only non-conflict diamonds.

• Our honesty and fairness have been tested and earned online since 1999