Research Article Search Results
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.
Discovery of Color-Change Chrome Grossular Garnets from Ethiopia
The first known group of color-change gem-quality chrome grossular garnet, reportedly from Ethiopia, is examined in GIA’s Carlsbad lab.
IAC Conference on Responsible Gold
Gold: Vortex, Virtues, and Values was hosted by Initiatives in Art and Culture (IAC) at Bohemian National Hall in New York City, April 12–13. Now in its eighth year, the conference has become an annual industry gathering for those looking to evaluate the market, discover exceptional work, and discuss key gold-related issues.
Observation of Etched Surface Micro-Features on HPHT Synthetic Diamonds Using Laser Confocal Microscopy
aser confocal microscopy, a very reliable method of revealing surface micro-features, is used on an HPHT synthetic diamond to reveal growth structures.
Update on Trace-Element Chemical Characteristics of Golden Sheen Sapphire
An update the gemological and chemical characteristics of golden sheen sapphires from Kenya.
Green-Blue Maxixe-Type Beryl
A transparent greenish blue pear-shaped gemstone, reportedly from Madagascar, is discovered to be a Maxixe-type beryl.
Nephrite Bracelet with Filled Cavity
A jade bracelet contains unusual fillers, used to create a smooth surface.
Beryl and Glass Assemblage Imitating Emerald
An unusual assembled stone is examined at GIA’s New York lab.
Two Natural “Horse Conch” Pearls
Rare pearls, along with their shell, are studied in the Hong Kong lab.
One Natural Melee Diamond Found in Large Batch of HPHT Synthetic Melee
Over the last decade, the production methods used to create synthetic diamond melee have improved substantially, along with the quality of the specimens themselves.
Three Irradiated CVD Synthetic Diamonds
Irradiated CVD-grown diamonds are examined in the Carlsbad lab.
Cabochons Fashioned from the Shell of Crassostrea Virginica
Crassostrea virginica, the so-called Eastern or American oyster, is a commercial seafood widely distributed along the east coast of the United States to the Gulf of Mexico.
