What is the Average Cost of Sillimanite? Average Sillimanite Price

Sillimanite is also called Bucholzite and like Kyanite and Andalusite is an alumino- silicate polymorph. It was described for the first time in 1824 and was named after the American chemist Benjamin Silliman. There are known two varieties of sillimanite: traditional and fibrous type, both of them occurring in sedimentary rocks. It has a white, brown or green color, with a vitreous luster for the traditional sillimanite and silky when it is fibrous. It is rarely used as a gemstone and as a mineral specimen. A small specimen of sillimanite weighing 0.8 pounds can be bought for $31.5.