9.05 ct. Chromium-Vanadium Kyanite
|Color: Medium Dark Slightly Greenish-Blue||Clarity: Eye Clean to Slightly Included|
|Origin: Tanzania||Cut: Rectangular Step|
|Treatments: None||Measurements: 20.1 x 8.7 mm|
Here is an oddity for the gem enthusiast with an interest in Kyanite. Several years 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. We have done our research here and this is unquestionably one of the largest and best examples from the entire find - most of the material has been highly included and MUCH smaller. Well cut, particularly for Kyanite, and very unusual.
$75 / carat - $678 total