IDEX Online16h
New Call for Full Disclosure on Ruby and Sapphire Treatment
The World Jewellery Confederation (CIBJO), the American Gem Trade Association (AGTA) and the International Colored Gemstone ...
INSTOREMAG.COM5h
Joint Statement on Response to Color Instability in Some Sapphires And Rubies
(PRESS RELEASE) The World Jewellery Confederation (CIBJO), the American Gem Trade Association (AGTA) and the International ...