Complex Fluid Inclusion in Topaz
A blue topaz recently examined by the authors contained an interesting and complex fluid-filled negative crystal that revealed some remarkable behavior when cooled down.
Market Reaction to the Pandemic: Insights from Exhibitors
A survey of Tucson exhibitors investigates the COVID-19 pandemic’s impact on business and market trends.
Large Green and Yellow Diamonds Colored by Nickel Impurities
Testing several large green and yellow diamond samples reveals that nickel-colored diamonds can occur in larger sizes and stronger color saturations than previously suspected.
18th Annual Sinkankas Symposium
The 2022 Sinkankas Symposium will cover alexandrite and other color-change gemstones.
Amber Filled with Epoxy Resin
Gulf countries experience an increase in epoxy resin filling in amber rosary beads.
Barite-Calcite Composite as Imitation “Wulanhua” Turquoise from Hubei Province, China
“Wulanhua” turquoise bracelet identified as composite material made of barite, calcite, and blue dye.
Characteristics of Amber with Irradiation Treatment
A study of the effects of irradiation treatment on amber.
Cuprite and Malachite in Agate from the Yanyuan Region, Sichuan
Rare identification of two kinds of copper-bearing inclusions in agate from the Yanyuan region in China.
The Discovery of Davemaoite, the CaSiO3 Perovskite, in a Diamond from Earth’s Lower Mantle
Davemaoite identified in a diamond from Orapa, Botswana.
Gray “Spinel Sisters”
Two rare gray spinel stones stand out at the AGTA show for their exceptional size, quality, and color.
Inclusions and Spectroscopic Features of Yellowish Green Enstatite
Close study of six bright yellowish green enstatite samples reveals cause of color and four-rayed asterism.
Large, Rare Faceted Collector Gems
Rarely faceted colemanite and phosphophyllite of record-breaking size were on display at the AGTA show.
Many Faces of Wavellite
An Arkansas lapidarist shares his work with wavellite and explains his stabilization process.
One-of-a-Kind Designs from Zoltan David
Iconic jewelry designer Zoltan David continues on his path of exploration in metalsmithing after 42 years of creating his one-of-a-kind designs.
Michael Traurig: An Opal Dealer’s Battle with COVID-19
Michael Traurig celebrates a return to Tucson after his COVID-19 recovery and recalls his family’s history in the business.
Old Techniques Reimagined: Maki-e Pearls
An ancient Japanese lacquer technique applied to cultured pearls creates unique pieces of art.
A Pink Sapphire Ring with a Message
Exquisite triple-halo pink sapphire ring commemorates breast cancer survival and raises awareness for others.
Puzzle-Like Gemstone Designs
An expansive collection of unique gemstone carvings from Steve Walters was on display at the 2022 AGTA show.
Social Media Success for Black Opal Direct
Black Opal Direct’s use of social media increases sales during the COVID-19 pandemic.
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