Shopping Cart

You have no item in your shopping cart

diamond grading
A diamond certificate verifies each diamond’s specifications, including its colour grade, carat weight, clarity grade and cut grade. You should never buy a diamond without a diamond certificate. The most well-known grading laboratories are the Gemological Institute of America (GIA) and the American Gem Society (AGS).

A diamond's cost depends upon objective characteristics popularly known as the 4C's: Colour, Clarity, Cut and Carat. The relationship between these four characteristics determines the value of a diamond. Although it is commonly assumed that carat is the most important member of the 4C's, colour, cut and clarity have a much greater impact on the appearance of a diamond.

Verification Report
To assure you of maximum confidence, Hong Kong Accredited Diamond Laboratory (HKADL) makes the best effort to verify every item you purchase on our Website. The Verification Report contains the verification results of the physical specifications of the product stated in the GIA/AGS Diamond Grading Report, with recognised gemological tolerances, submitted by the user after it has been graded, tested, examined, and analysed using the advanced techniques and equipment of HKADL.