Review of Suzanne Ramljak's Unique by Design: Contemporary Jewelry in the Donna Schneier Collection.

Review of Richard Hughes’s Ruby & Sapphire: A Collector’s Guide.

Review of Ronald McIntosh and Warren Anderson's Kentucky Agate: State Rock and Mineral Treasure of the Commonwealth.

Review of Stefano Papi’s Jewels of the Romanovs: Family & Court.

Overview and commentary on the 2013 The Journal of Gemmology article “Peñas Blancas: An Historic Colombian Emerald Mine."

Presents what is believed to be the first report of a xenotime inclusion in gem-quality diamond.

A look at the first CVD synthetic diamond examined at GIA that has been irradiated to a blue color.

A rare look at natural pearls from a known Spondylus species, commonly called “thorny” oysters.

Introduces the Chinese nephrite mine in Hechi and characterizes the “band” and dendritic patterns found in this material.

This aquamarine's most striking feature was its unusually strong dichroism, displaying very deep blue and pale bluish green colors.

The Indian Gemological Institute’s Gem Testing Laboratory recently examined a 0.30 ct colorless round brilliant-cut diamond containing an interesting inclusion.

Describes the phenomenon of pleochroism and its complex effect on the appearance of colored stones.

Examines the internal structure, chemical composition, and spectroscopic features of 22 pen pearls.

Reports on the first discovery of fine topazolite garnet crystals in Mexico.

カリフォルニア州産の宝石

GIAのチームは、小売と製造において豊かな伝統を持つ中国最古の宝石商の一つを訪問した。執筆陣は、老鳳翔が長年にわたって築き上げてきた評判、そして今日の市場に対応するために同社がどのように変革を遂げてきたかについて学んだ。