Research & News
JCK: Business Slow, Lab-grown Diamond Grow
Decent demand for finished jewelry, but less for loose gems. Plus: Lab-grown diamonds and responsible, sustainable business practices.
Orange "Golden Sheen" Sapphire Reportedly from Kenya
A transparent oval-cut orange sapphire showing a golden sheen effect is examined.
Chatoyant Quartz/Tourmaline Doublet
A unique doublet displaying a yellowish chatoyant sheen is examined by the Tokyo lab.
Consumers Care Where Jewelry Comes From
Consumers want to know that the components of their jewelry – gemstones, diamonds and precious metals – are responsibly sourced.
The Granada Gallery
Traveling gallery exhibits stunning mineral specimens during the Tucson gem shows.
Sapphire Inclusion with Rutile “Silk” in a Burmese Star Sapphire
Illumination techniques reveal a remarkable sapphire inclusion within a Burmese star sapphire.