Other links at |
1. |
GIA Gem Trade Laboratory
|
|
Provides grading and identification of diamonds, colored stones or pearls for the industry and consumers.
|
3. |
Russian Gemological Server
|
|
Offers gemstone analysis software, gemological education, and gemological laboratory services. Includes articles on diamond cut studies and a gallery of virtual diamond images.
|
5. |
GemResearch Swisslab
|
|
Determination of the authenticity and country of origin of a rubies and sapphires. Offers gemstone reports and inscriptions.
|
|
|