Tucson Show 2013（2013年ツーソンショー）の内側
Fluorescence Produced by Optical Defects in Diamond
How variations in UV lamp output can affect observed fluorescence color and intensity.
Spiral Patterns on a Non-Nacreous Pearl
Cause of Color in Yellow Sapphire, Plus Characterization of Oregon Sunstone, Ukrainian Beryl, and British Columbian Iolite
Aquamarine with Zigzag Growth Line Inclusions
Blackish Green Omphacite Jade from Guatemala
A Guatemalan jade called yongchuliao has gained popularity among Chinese buyers.
Chicago Responsible Jewelry Conference
A report on the seventh annual Chicago Responsible Jewelry Conference.
Turquoise United Conference 2023
Eclogite: Diamond-Encrusted Ancient Seafloor
Explores eclogitic diamonds, which make up a significant portion of the gem diamond market, and what they reveal about Earth’s dynamic processes.
Polymer-Filled Aquamarine
Hydrothermally Grown Synthetic Aquamarine Manufactured in Novosibirsk, USSR
Etch Pits in Heliodor and Green Beryl from the Volyn Pegmatites, Northwest Ukraine: A Diagnostic Feature
Examines dissolution features of heliodor and green beryl from a Ukrainian pegmatite field and offers criteria to distinguish them from samples found in other localities.
Natural Rubies with Glass-Filled Cavities
Separating Glass-Filled Rubies Using the DiamondView
The DiamondView instrument is able to identify glass as the filler in a pair of heart-shaped rubies.
Fraudulently Inscribed Synthetic Moissanite
The Mumbai laboratory finds a fraudulent GIA inscription on synthetic moissanite.
Unusual Purple Fluid in Quartz
Numerous negative crystals in a pear-shaped quartz host brightly colored purple liquid.
Iolite from the Thor-Odin Dome, British Columbia, Canada: Geology, Chemical Composition, Inclusions, and Cause of Chatoyancy
Reports on the geological setting and gemological properties of violet-blue gem cordierite from new deposits located in British Columbia.
Translucent Ruby Filled with Zinc Glass
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