Reports on an expedition to many known and new Tanzanian gem localities.

The first visual record of axinite inclusions in quartz published in the gemological literature.

Analyzes the gemological and geochemical characteristics of peridot from the Gia Lai province alongside specimens from other localities to gain insight into its formation.

A spinel from Madagascar, mixed in with a parcel of blue sapphire, exhibited an array of internal features.

Determines whether blue zircon, inadvertently altered to brown by exposure to long-wave UV radiation, can be restored to its original color through the use of incandescent light.

Reports on exceptionally rare trapiche-patterned rhodochrosite from the famed Capillitas mine in Argentina.

Examination of pearls with a dominant purple hue, reportedly from the Spondylus calcifer mollusk.

Reports on the internal features and spectroscopic and trace-element analysis of rubies reportedly from Pokot, Kenya.

Documents the retrieval and testing of P. maxima cultured pearls from a Lombok hatchery.

Analysis of attractive purple garnets from a new deposit in central Mozambique.

Studies the formation and chemical composition of the largely unexamined alluvial sapphires from Russia’s Jewish Autonomous District.

Reviews the properties of exceptionally pure grandidierite from a new source.

Explores statistical data and defining characteristics of gem-quality CVD synthetic diamonds examined by GIA since 2003.

Testing of natural-color yellow sapphires from Australia and Thailand with the FTIR features of “Punsiri” heat-treated material.

This violet-colored fluorite crystal was free to move in its octahedral void, as seen in four different positions. Photomicrographs by Nathan Renfro; field of view 7.18 mm.

Examination of aquamarine samples from a new primary deposit in San Luis Potosí, northern Mexico.

A strikingly large primary fluid inclusion with a gas bubble was seen in a Moroccan amethyst.

An overview of the Winter 2016 Gems & Gemology content.

An overview of the Fall 2016 Gems & Gemology content.

Gems & Gemology（宝石と宝石学）2016年秋号の要約。