4.65 ct. Cr-V Kyanite
Color: Medium Dark Greenish-Blue
Clarity: Eye Clean to Slightly Included
Origin: Tanzania
Cut: Oval Mixed
Treatments: None
Measurements: 12.1 x 8 mm
Here is an oddity for the gem enthusiast with an interest in Kyanite. Several decades ago a small deposit of gem Kyanite from Madagascar 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 very distinctive saturated greenish-blue color of the Madagascar finds.