About Us

DGS offers the fine jewelry trade accurate, reliable gemstone identification and professional certification to validate their gemstone purchases.

DGS has built a reputation in the diamond industry for:

Why DGS?

DGS is an independent gemological laboratory and appraisal services company. DGS is located in the heart of New York's international diamond and jewelry district renowned for its quality services, extensive experience and know-how.

Today, as consumers have become more demanding and quality conscious about the products they buy, A jewelry buyer seeking an explanation of why two similar diamond rings are priced thousands of dollars apart will not be satisfied with being told simply that one is a 'better' diamond. He or she will want to know why it's better. Today's jewelry consumers are more familiar with the 4C's than their parents. Jewelers now consider supplying such information as an integral part of any sale and modern retail training programs stress the importance of providing independent gemological reports for gems and jewelry in addition to educating the consumer.

All this has led to an increase in demand for reliable grading or appraisal reports from credible organizations such as the Gem House International (DGS).

Jewelers, retail stores, insurance companies, internet sales organizations, catalogue companies (mail order), accounting and securities firms and consumers are relying on the DGS reports.

Today the majority of good quality gem and jewelry items are sold with gemological reports. Besides exceptional stones, a gem has no name, no history. The user doesn't know where the stone was found, who extracted it, who polished it, or the name of the dealer. The only document that travels around the world with the gem is the Gemological Report.

Our office is open currently to the trade only: Diamond dealers and Jewelry manufacturers.

Corporate Office
D.G.S. Gem Lab.
580 Fifth Avenue
New York, NY 10036
580 Fifth Avenue New York
About DGS | Privacy Policy | Contact Us | ©2015 Diamond Appraisal and Gemological Services