Research & News
Vibrantly Colored Gems
Bill Larson of Pala International reports a very strong AGTA Tucson show.
2018 GIA Symposium
Scientists and business leaders will gather at a summit of the gem and jewelry industry.
Cat's-Eye Demantoid and Andradite with Horsetail Inclusions
Two unusual garnets receive identifications issued for the first time in GIA's colored stone report records.
Six-Rayed Star in Sapphire from Myanmar
A Burmese sapphire shows a celestial scene both externally and internally.
Unusual Orange Pyrope-Spessartine-Grossular Garnet
A garnet proves to have a much higher grossular component than initially expected.
Unheated and Unusual Colors
Margit Thorndal of Madagascar Imports offers her perspective on the colored stone market.