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

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

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.

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

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

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.

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

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

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

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.

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.

An overview of the Winter 2016 Gems & Gemology content.

An overview of the Fall 2016 Gems & Gemology content.

内容摘要详见《宝石与宝石学》(Gems & Gemology) 2016 年秋季刊。

Review of Stoned: Jewelry, Obsession, and How Desire Shapes the World by Aja Raden

Review of Gems & Crystals: From One of the World’s Great Collections, by George E. Harlow and Anna S. Sofianides.

Review of Jewelry by Suzanne Belperron: My Style is My Signature by Patricia Corbett, Ward Landrigan, and Nico Landrigan.

您已经听说过钻石品质的 4C 标准（颜色、净度、切工、克拉重量）。 但是它们是怎样变得如此知名的呢？一起来简要了解钻石的历史吧。