Spring 1988 G&G; Lab Notes
Mexican Opal – Tucson 2014
Fire opal production at a family-owned mine in Mexico is explored at the 2014 GJX show in Tucson.
The Largest Diamond Ever Discovered in North America
GIA examines a 552.7 ct diamond from the Diavik mine in Canada.
Jewelry Shanghai 2014
An insider look at the May 2014 show, held at the Shanghai Word Expo Exhibition & Convention Center.
Phosphorescence of Synthetic Sapphire
A synthetic colorless sapphires is tested to identify the source of its phosphorescence.
Guizhou Jade from Qinglong, China
The authors collect Guizhou Jade at the mine and explore the antimony deposit in Qinglong, China.
Natural Emerald with Inclusions Along Three Directions
Guild Gem Laboratories examines a 10.48 ct sugarloaf emerald for identification and origin determination.
Fall 2011 G&G; Lab Notes
This section, from the Fall 2011 issue of Gems & Gemology, is a compilation of interesting finds from GIA’s laboratories.
Prominent Growth Planes Observed in HPHT-Processed CVD Laboratory-Grown Diamonds
DiamondView imaging reveals distinct growth layers in CVD laboratory-grown diamonds treated with an HPHT process.
More of the Interesting and Unusual – Tucson 2014
Alluring finds at the 2014 gem shows in Tucson.
Marine Mining of Diamonds off the West Coast of Southern Africa
Reply to: Evidence for two blue (type IIb) diamond populations
Smith E.M., Shirey S.B., Richardson S.H., Nestola F., Bullock E.S., Wang J.H., Wang W. (2019) Reply to: Evidence for two blue (type IIb) diamond populations. Nature, Vol. 570, pp. E28-E29.
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