Sillimanite

Item Description

Sillimanite is actually trimorphous with Kyanite and Andalusite which means that they have the same chemistry, but different crystal habits create different minerals, just like Brookite, Anatase and Rutile. Sillimanite is sometimes called "Fibrolite" because of the fibrous nature of the material, but this stone is different from most Sillimanite on the market. This is actually pretty rare material, and one of the few I've seen in this clarity and size. This gem has a VERY light yellow-green color, and the VS clarity is special for the size. I don't get many of these stones, and considering that the large majority of the Sillimanite in the world is used for cat's eye stones, gems with this clarity in this size are very difficult to find.