Jade Forms from Ancient China
Trapiche Tourmaline from Zambia
Well-formed crystals of green tourmaline from northwestern Zambia show a growth pattern reminiscent of trapiche emerald/ruby when sliced perpendicular to the c-axis.
An Era of Sweeping Change in Diamond and Colored Stone Production Markets
The diamond, colored stone, and pearl businesses have witnessed unprecedented change since the turn of the 21st century.
Liddicoatite Tourmaline from Anjanabonoina, Madagascar
Coated Fire Opal in the Chinese Market
IMA General Meeting
Trapiche-Type Emeralds from Pakistan
The Gujar Killi Emerald Deposit, Northwest Frontier Province, Pakistan
Over the last decade, Pakistan has developed into an important source for many gem materials. A number of localities have been identified for emeralds in particular.
A Historic Turquoise Jewelry Set Containing Fossilized Dentine (Odontolite) and Glass
Investigating a set of six antique brooches set with diamonds and light blue cabochons.
The Ultimate Gemologist:A Tribute to Richard T. Liddicoat
On this occasion—the celebration of Richard T. Liddicoat’s 50 years guiding Gems & Gemology—it is fitting to review his enormous impact on the field of gemology.
Large Aqueous Primary Fluid Inclusion in Amethyst
A Review of HPHT Synthetic Diamonds Grown forJewelry Use
The “Montana Queen” Sapphire
Multi-Color-Zoned Quartz from Brazil
GIA’s 2018 Symposium: Up and Away!
Fall 2018 G&G Publication Information
Trapiche and More...
Serpentine Cabochon with Unusual Olive Green Color
Glassy Melt Inclusions in Sapphires from Montana
Two-phase inclusions are investigated in alluvial sapphires from deposits in Montana.
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