Research Article Search Results

Examination of the largest HPHT synthetic diamonds GIA has examined so far demonstrated significant progress in this growth technology.

Describes the extremely rare polished pink diamonds from Australia’s Argyle mine that have been sold for 30 years through invitation-only tenders.

Although this stone bore some superficial resemblance to moissanite, its gemological properties were consistent with HPHT synthetic diamond.

Review of Yvonne J. Markowitz and Denise Doxey's Jewels of Ancient Nubia.

Melee diamonds can be efficiently screened for synthesis and treatment using infrared absorption spectroscopy, DiamondView imaging, and microscopy.

Offers a firsthand look at Sri Lanka’s mining, cutting, jewelry manufacturing, and retail sectors, where tradition and innovation converge.

Examination of two CVD synthetic diamonds with an unusual Fancy Dark gray color.

Examination of a CVD synthetic diamond with an unusual pattern of growth dislocations that resemble natural inclusions.

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

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

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

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