A New Type of Rutilated Quartz Composite Product
Unusual Violet Maxixe Beryl
Iridescent Botryoidal Growth in Untreated Akoya Pearl
An untreated akoya pearl displays an unusual iridescence caused by subsurface growth.
Grossular Garnet Crystals in Demantoid Garnet
Demantoid garnet plays host to crystals of a different garnet species.
Quarterly Crystal: Fibers and Rods in Euclase
Ahmadjan Abduriyim Receives JAMS Award for Applied Mineralogy
Ahmadjan Abduriyim receives 2021 JAMS award for his contributions to applied mineralogy.
Atypical “Box Bead” Cultured Pearls
GIA’s Bangkok laboratory examines five “box bead” cultured pearls with nuclei fashioned from saltwater shell.
Jewelry Glossary Project Survey
Moonstone Jewelry
The adularescent gem moonstone was prominently featured in this year’s Tucson shows.
Sapphires from Colombia
Unheated material from a sapphire deposit in southern Colombia is examined in GIA’s Carlsbad lab.
Condor Agate from Argentina
A vibrant orange and yellow agate displays interesting concretions in its core.
“Double Bubble” Multiphase Inclusion in Beryl
Grandidierite Inclusions in Sapphires
Grandidierite, an unusual inclusion in sapphire, independently encountered by two laboratories.
Quarterly Crystal: Orpiment in Barite
Sapphire Inclusion with Rutile “Silk” in a Burmese Star Sapphire
Illumination techniques reveal a remarkable sapphire inclusion within a Burmese star sapphire.
Star-Like Growth in Natural Yellow Sapphire
A natural yellow sapphire features a distinctive star-like graining pattern.
Accredited Gemologists Association (AGA) Conference
A report from the Accredited Gemologists Association (AGA) Conference, held in Tucson, Arizona, on February 6, 2019
Brazilian Alexandrite Update
E. Alan Jobbins (1923–2019)
An obituary detailing the many contributions of gemologist E. Alan Jobbins.
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