featured
Research & News
FIELD GEMOLOGY UPDATE
The Latest in Field Gemology from Wim Vertriest
Learn the latest on Madagascar sapphires and demantoid garnets from Wim Vertriest, GIA Manager of Field Gemology.
RETAILER RESOURCE
How GIA Analyzes Pearls from Start to Finish
Easy, step-by-step guide to how GIA analyzes pearls in its laboratory
RETAILER RESOURCE
How GIA Grades Colored Stones from Start to Finish
Easy, step-by-step guide to how GIA analyzes colored gemstones in its laboratory.
RETAILER RESOURCE
Testing Diamonds and Gems using UV Light
Quick how-to guide for retailers to test gemstone fluoresence and help identify stones in their own stores.
LABORATORY-GROWN DIAMONDS UPDATE
The Latest on Laboratory-Grown Diamonds
Learn the latest trends by GIA on the laboratory-grown diamond industry.
GLOWING GEMS - WHAT DOES FLUORESCENCE TELL US?
G&G in a Flash: What Does Fluorescence Tell Us?
Learn about the principles, mechanisms, and characteristics of luminescence that create the impressive and memorable glow of gemstones.
