A Newly Discovered Iridescent Andradite from Inner Mongolia, China
An Environmental, Social, and Governance Assessment of Marine Pearl Farming
A look at the sustainability challenges and opportunities facing marine pearl farming using an Australian pearl farm as a case study.
Mining Basalt-Related Gems in Southeast Vietnam
Gems from seven gemstone occurrences identified within the basaltic fields in southeast Vietnam are analyzed.
Shell Blister on an Isognomon isognomon Shell
An Isognomon isognomon shell with a blister feature is examined at GIA in Mumbai.
The Special Color Effect in “Chameleon” Amber
An examination of three Burmese chameleon amber specimens using 3D fluorescence spectroscopy.
Survey of Colored Stone Preferences Among Younger Generations
An online survey assesses current colored stone preferences in consumers under 35.
A Type of Multi-Colored Quartz with Oriented Inclusions, Reportedly from Brazil
A study of a special quartz known in the Chinese trade as “Auralite 23.”
A Non-Nacreous Pearl Reportedly from Telescopium telescopium
An examination of the first natural pearl reportedly discovered in a Telescopium species.
Treated “Nickel-Rich” Green Diamond
Examination of a Fancy yellow-green diamond attributes color to both natural and artificial mechanisms.
Treated Orange and Pink CVD Laboratory-Grown Diamond
The Carlsbad laboratory reports on two CVD-grown diamonds subjected to multiple treatments to achieve their final color grades.
Large Orange Rutile Inclusion in a “Chameleon” Diamond
A partially enclosed orange rutile crystal is observed on the crown of a faceted diamond.
Quarterly Crystal: Panasqueira Quartz
Numerous inclusions are observed in a parallel cluster of two quartz crystals from Minas de Panasqueira in Portugal.
Small “Surprise” in Elbaite Tourmaline
Diopside crystals observed in elbaite tourmaline resemble an exclamation point.
“Smoke Rings” in a Non-Beryllium-Diffused Sapphire
A rare look at a smoke ring pattern identified in sapphire without the presence of beryllium.
Stellate Zircon in a Paraíba Tourmaline
Fiber-optic light reveals a remarkable set of stellate inclusions in blue-green Paraíba tourmaline.
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.
Gems & Gemology Turns 90!
Butterfly Brooch Showcasing East African Gems
A brooch adorned with 49 East African Gems was on display at the AGTA show.
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