Spring 2015 G&G Examines Blue Spinel, Chinese Jewelry Design and the Latest in Synthetics
G&G Brief presents an overview of the content of the Spring 2015 issue of Gems & Gemology.
Silicon in Natural Type IIa and Type IaB Diamond
Silicon, normally associated with CVD synthetic diamond, may be found in natural diamond.
Purple Jadeite Rock
Detected mineral components—jadeite and quartz, with reddish orange portions of cinnabar—shed light on a purple bead’s possible origin.
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 color-change effect.