News Archive

Colored Stone Market

Business in the international gem market is reportedly way off this spring. Supply is tight in the high end goods and small scale investment in production is lagging. The excitement that colored stone dealers had…

Diamond Market

At the last DeBeers site in April, rough prices were increased by an average of 3%. Stones in the one to two carat range and above 5 carats had higher increases. Since boxes were already…

Co-Glass and Sapphire Composites

During a December trip to the 2012 GIT Conference in Bangkok, Thailand, the author purchased several blue stones claimed to be (Cobalt) Coglass filled sapphires. General observation seemed to confirm the blue sapphire color with…

Pearls Shine in Tucson

The members of the annual Friday morning pearl walk organized by GemGuide advisor Lois Berger experienced the changes first hand. Dealers representing each of the major cultured varieties—Akoya, Tahitian, South Seas and Chinese Freshwaters—were reporting…

In The Land of Zultanite

The Milenyum Diaspore mine is the world’s only known deposit of gem quality Diaspore. The mineral diaspore is mined in many locations around the world, but no other are currently known that produce this beautiful…