Famous Diamonds Examined by GIA
An aura of mystery has always surrounded these natural wonders, so it was quite an honor when GIA researchers examined these famous diamonds.
Characterization and Grading of Natural-Color Pink Diamonds
Known for their great beauty and rarity, pink diamonds have long been sought after by jewelers, collectors, and consumers.
The Coscuez Mine: A Major Source of Colombian Emeralds
The Coscuez mine, one of a number in Colombia, is rapidly gaining significance as a major source of fine emeralds.
Fall 2016 G&G: CVD Synthetic Diamonds Survey, Reversible Color Change in Blue Zircon
A summary of the content found in the Fall 2016 issue of Gems & Gemology.
The Very Deep Origin of the World’s Biggest Diamonds
Explores an exceptional family of diamonds, referred to as “CLIPPIR” (Cullinan-like, Large, Inclusion-Poor, Pure, Irregular, and Resorbed), that formed in a superdeep environment.