Article Search Results

Show Filters
Showing 2 results for "*"
Dumortierite as sapphire
Dumortierite-Quartz Rock Presented as Sapphire

The Gem Testing Laboratory of Jaipur, India, received for identification an opaque blue specimen, submitted as sapphire.

Read More

CVD Synthetic Diamond
Undisclosed Samples of Large CVD Synthetic Diamond

In mid-2012, one of the international diamond grading laboratories in Antwerp reported undisclosed CVD synthetic diamonds, causing a stir in the diamond industry.

Read More