Summer 2016 G&G: Diamonds from Diavik, Responsible Sourcing and Fabergé Cossack Figures
A summary of the content found in the Summer 2016 issue of Gems & Gemology.
Opal Quality Factors
Individual opals are as diverse as snowflakes or fingerprints and can vary widely in appearance and quality. Learn about the factors that make opals so desirable!