“Rainbow Lattice” from Australia
One of the most striking materials encountered in the Riverpark Inn (Pueblo) Gem Show was “rainbow lattice.”
Sourcing Stones with Columbia Gem House
Thoughts from a longtime Tucson exhibitor on responsible practices and the changing market trends.
The Granada Gallery
Thoughts on the Chinese and Japanese Gem Markets
Appendix 5: Simplified Tourmaline Species Classification for LA-ICP-MS Data
Appendix 4: Guideline for Simplified Distribution of Site Occupancy for LA-ICP-MS Data
A Variety of Colored Stones from Mayer & Watt
Mother-and-son team Laurie and Geoffrey Watt (Mayer & Watt, Maysville, Kentucky) noted that while there were plenty of customers at the AGTA show this year, the formula for success was a wide selection of materials and competitive pricing.
2019 Jewelry Industry Summit
The third Jewelry Industry Summit, held in Tucson February 2–3, revealed the successful implementation of several initiatives mapped out since the conference’s inception in 2016.
Studies on Tourmaline, Sapphire, Cultured Pearl, and a Reliquary of Legend…
Derek Katzenbach: Faceter, Gem Artist, Custom Jeweler
Jeff Hapeman: Stories from a Gem Cutter
Jeff Hapeman of Earth’s Treasury (Westtown, Pennsylvania) loves a gemstone with a good story.
The Rock Hound: Muzo Emeralds and Ethical Practices
Susi Smither discusses her sustainable, responsible, and ethically based business practices.
Chatoyant Quartz/Tourmaline Doublet
A unique doublet displaying a yellowish chatoyant sheen is examined by the Tokyo lab.
Ponderosa Sunstone Update
The president of Oregon’s Desert Sun Mining and Gems provides the outlook for activity at the Ponderosa sunstone mine.
"The Ethics of Jewelry" at MetFridays
A summary of “The Ethics of Jewelry” panel, held at New York’s Metropolitan Museum of Art on January 25, 2019.
Second Annual Buccellati Award Winner
A graduate of GIA’s Jewelry Design program in Taiwan is the recipient of the Buccellati Award.
Boulder Opal Mining with Rod Griffin (英语)
At the AGTA show, Rod Griffin (Rod Griffin Boulder Opals, Silverado, California, and Queensland, Australia) told us that the world market for all types of opals continues to be strong, but Australia’s opal industry is shrinking due to the costs, challenges, and changing regulations of mining.
Largest Square Cushion-Cut Tsavorite
A 283.74 ct rough tsavorite from Merelani, Tanzania, yields a square cushion-cut gemstone weighing 116.76 ct.

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