The 2005 American Gem Trade Association (AGTA) Spectrum Awards competition concluded in October with 57 winners chosen from a field of 420 gemstone and jewelry entries. The Spectrum Awards competition encompasses two major awards: the…
Beryllium diffusion typically brightens the color of ruby or sapphire, making a stone more yellow, orange, or red, depending on the original color. Because the color change can go all the way through the stone, the treatment is more difficult…
For the residents of South Africa poorest neighborhoods, jewelry makes for a fresh start. Until 10 years ago, global economic sanctions against South Africa generally forced South African companies to keep their manufacturing in-house…