1.66 ct. Chromium / Vanadium Kyanite
Here is an oddity for the gem enthusiast with an interest in Kyanite. A decade ago a small deposit of gem Kyanite from Madgascar was found to contain significant amounts of the elements Vanadium and Chromium. See the Fall 2007 issue of Gems and Gemology for a write-up of this material. These elements contributed to an attractive gem greenish-blue color that is unusual in gem Kyanite - more more well known are the greenish stones from Brazil and the deep blues from Nepal. This interesting gem is from a newer find of this material in Tanzania - the deposit has produced gems with the same saturated greenish-blue color of the Madagascar finds.
This an exceptional
gem for the find - the color is intense and bright and the stone is almost
completely clean. Additionally, the cutting is very well done for Kyanite
and offers a rare chance to enjoy the brilliance this species is capable of.