Ametrine with Layers of Smoky Quartz
An investigation of these Yuruty mine samples revealed an interesting new aspect to this bicolored quartz.
Update on Ametrine from the Yuruty Mine, Bolivia
A compilation of gem news from around the world, covering topics such as localities, unusual gem materials, market news, new products, discoveries, jewelry manufacturing techniques, and industry trends.
Trapiche Emerald from Colombia
The examination of a nearly complete trapiche emerald crystal–which are difficult to obtain–is consistent with the findings of previous studies.
Thoughts on the Chinese and Japanese Gem Markets
Shahin Aboosalih of SR Trading shares his insights on the gem and jewelry industry.
Unusual Faceted Gemstones
A look at the rare and unusual gem and mineral market.
The adularescent gem moonstone was prominently featured in this year’s Tucson shows.
Unique Orange Sapphire with Golden Sheen Effect Reportedly from Kenya
A transparent oval-cut orange sapphire showing a golden sheen effect is examined.
“Rainbow Lattice” from Australia
A rare gem material from Australia makes an appearance at the Riverpark Inn (Pueblo) Gem Show in Tucson.
Sourcing Stones with Columbia Gem House
Thoughts from a longtime Tucson exhibitor on responsible practices and the changing market trends.
Sapphires from Colombia
Unheated material from a sapphire deposit in southern Colombia is examined in GIA’s Carlsbad lab.