Coesite Inclusions with Filaments in Diamond
Inclusions with unusual formation are found in a treated Fancy Vivid yellow diamond.
Xenotime Inclusion in Yellow Diamond
Presents what is believed to be the first report of a xenotime inclusion in gem-quality diamond.
Diamond with High Concentration of Nickel
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
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.
Spring 1991 G&G Lab Notes
This section, from the Spring 1991 issue of Gems & Gemmology, is a compilation of interesting finds from GIA’s laboratories.