Rising diamond prices ‒ especially half-carat to one-carat stones ‒ have slowed sales for the online diamond retailer.

Renowned gem photographer Robert Weldon offers his tips for capturing the best gem photographs.

Ronald McIntoshとWarren Anderson共著、Kentucky Agate: State Rock and Mineral Treasure of the Commonwealth（ケンタッキー州産アゲート(瑪瑙/めのう)：州指定の岩石および鉱物の財宝）の書評。

Review of The Collector's Guide to the Minerals of New York State.

Natural moissanite crystals found in Israel have broken world records, with evidence of larger crystals in the area.

A natural diamond with a CVD synthetic film is examined at GIA's Carlsbad lab.

A Fancy yellow type Ib CVD-grown synthetic diamond undergoes testing at the New York lab.

Examines the history of diamond production in Botswana and the long-term outlook for beneficiation through value-added industries.

Review of Franco Cologni’s In Praise of Hands: The Art of Fine Jewelry at Van Cleef & Arpels.

Review of Diana Scarisbrick’s Rings: Jewelry of Power, Love and Loyalty.

Examination of commercially-available “shell pearls” reveals imitation material.

Discusses the role of three-phase inclusions in emerald, in combination with spectroscopy and trace-element analysis, in determining geographic origin.

Amber samples were heat-treated, using various procedures and parameters, in an effort to reproduce materials found in the jewelry market.

Color modification is observed in a reddish orange zircon at the Bangkok laboratory.

A bluish violet sapphire shows surprising effects under lab examination.

An opal featuring a rare six-rayed star is examined in GIA's Bangkok lab.

Investigates the presence of fluorescence, rather than iridescence, as the cause of color in blue amber from the Dominican Republic and Indonesia.