Perles de Culture de la Mer de Cortez: Les Belles Inconnues [Unknown Beauties: Cultured Pearls from the Cortez Sea]
The “Glet Filling”: The Filling of the Cracks in Precious Stones Under Scrutiny
This short article discusses several important aspects of crack-filling in colored stones and diamonds.
Gem Olivine and Calcite Mineralization Precipitated from Subduction-Derived Fluids in the Kohistan Arc-Mantle (Pakistan)
Examination of Three-Phase Inclusions in Colorless, Yellow, and Blue Sapphires from Sri Lanka
Three-phase inclusions in untreated natural colorless, yellow, and blue sapphires from Sri Lanka were found to consist of liquid and gaseous carbon dioxide as well as needle-like to tabular crystals of diaspore.
Well-Formed Tsavorite Gem Crystals from Tanzania
Green grossular garnet crystals of fine form and clarity have been found recently in Tanzania.
Emeralds and Green Beryls of Upper Egypt
Ancient Tourmaline and Beryl from Afghanistan
Examination of a large private collection of beads and carvings from antique excavations, assembled in the 1970s by a collector in Afghanistan.
Banded Mimetite
Yellow transparent mimetite—known to collectors as one of the rarest faceted stones—purchased in Tuscon and likely from Bolivia.
Update on Mexifire Synthetic Fire Opal
As a result of changes in the manufacturing process, recent production of the synthetic fire opal marketed as “Mexifire” exhibits some new properties.
Yellow Scapolite from Ihosy, Madagascar
Attractive yellow to light greenish yellow gem scapolites have been mined from a skarn deposit near the town of Ihosy.
Almandine in Graphite Schist Specimens
Almandine garnet in graphite schist was on display in Tucson.
Unusual Yellowish Green Spinel
Abstracts; Fall 2008
This article, from the Fall 2008 issue of Gems & Gemology, is a compilation of abstracts of important gemology-related articles published outside of Gems & Gemology.
Fall 1987 G&G Book Reviews
Fall 1987 Gem News International
A compilation of gem news from around the world, covering topics such as localities, unusual gem materials, market news, new products, discoveries, jewelry manufacturing techniques, and industry trends.
Fall 1987 G&G; Lab Notes
Fall 1988 G&G; Book Reviews
“Gems and Jewelry Appraising”; “Dictionary of Gemmology,” 2nd Edition
Fall 1988 Gem News International
A compilation of gem news from around the world, covering topics such as localities, unusual gem materials, market news, new products, discoveries, jewelry manufacturing techniques, and industry trends.
Fall 1988 G&G; Lab Notes
This section, from the Fall 1988 issue of Gems & Gemology, is a compilation of interesting finds from GIA’s laboratories.
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