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Coesite Inclusions with Filaments in Diamond

Evan M. Smith, Christopher Vendrell, and Paul Johnson, January 27, 2017

Inclusions with unusual formation are found in a treated Fancy Vivid yellow diamond.

Xenotime Inclusion in Yellow Diamond

Kyaw Soe Moe, Martha Altobelli, and Paul Johnson , October 31, 2014

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

Diamond with High Concentration of Nickel

Troy Ardon, October 17, 2013

Analysis of Fancy Light greenish yellow diamond leads to detection of nickel, as well as an inclusion that gives a colour-change effect.

Fish-Like Inclusion Found in Fancy Yellow "Cape" Diamond

Martha Altobelli, GIA , July 1, 2013

A recent lab examination at GIA New York revealed an inclusion in a rectangular Fancy Yellow called "pareidolia", which means it was a resemblance of the scales and form of a fish.

Confusing, Triangular Inclusions in an Art Deco-Style Pin

Spring 1991 G&G Lab Notes

March 1, 1991

This section, from the Spring 1991 issue of Gems & Gemmology, is a compilation of interesting finds from GIA’s laboratories.

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