The surface texture of a diamond is affected by the gemstone’s structure.
Read More
A cape diamond examined in the New York lab shows rare yellow phosphorescence.
Read More
Red fluorescence, rarely seen in natural colourless type IIa diamond, is observed at the New York lab.
Read More
A natural type IIb diamond with rare colour and very strong 776.4 nm PL peak is seen at the Carlsbad lab.
Read MoreThis section, from the Winter 2011 issue of Gems & Gemmology, is a compilation of interesting finds from GIA’s laboratories.
Read MoreThis section, from the Fall 2011 issue of Gems & Gemmology, is a compilation of interesting finds from GIA’s laboratories.
Read More
This section, from the Summer 2009 issue of Gems & Gemmology, is a compilation of interesting finds from GIA’s laboratories.
Read More
G&G Brief presents an overview of the content of the Spring 2015 issue of Gems & Gemology.
Read MoreThis section, from the Winter 2012 issue of Gems & Gemology, is a compilation of interesting finds from GIA’s laboratories.
Read MoreThis section, from the Spring 2012 issue of Gems & Gemology, is a compilation of interesting finds from GIA’s laboratories.
Read More
