Tsarstone collectors guide
Provides grading and identification of diamonds, coloured stones or pearls for the industry and consumers.
Homepage | Address | Contact |
---|---|---|
www.gia.edu |
580 Fifth Avenue Suite 200 New York 10036 United States of America |
N: Jan Tilton T: 212-221-5858 F: 212-575-3095 E: laboratorycustomerservice@gia.edu |
GIA is considered the world's most trusted name in diamond grading and gemstone identification. GIA’s D-to-Z colour-grading scale and Flawless-to-I3 clarity-grading scale are recognized by gem and jewellery professionals everywhere. And, by extension, the GIA Diamond Grading Report, Diamond Dossier, and Gemological Identification Report are considered the world’s premier gemological credentials.
Sponsored by Multicolour Gems Ltd Design and maintenance by Netcomposite®