This natural Brown Sillimanite Cat's Eye originates from Madagascar and its weight is about 8 carats. The measurements are 15.18mm x 8.76mm x 7.23mm (length x width x depth). The shape/cut-style of this Sillimanite Cat's Eye is Oval Cabochon. This 8.24ct Sillimanite Cat's Eye gem is available to order and can be shipped anywhere in the world. Gemstone Certification can also be provided as an optional service.
About Sillimanite Cat's Eye
Sillimanite is an aluminum silicate, related to both andalusite and kyanite. In fact these three minerals are polymorphs -- they share the same chemical composition but different crystal structures.
Sillimanite is named after the American chemist Benjamin Silliman (1779-1864). Silliman was one of the first American professors of science and taught at Yale University.
I have known about GemSelect for a while but this is my first purchase because I am a jewelry maker in the market for lower-priced gems that I can resell in jewelry. It's difficult to make much of a profit on cheaper jewelry when the shipping price is sometimes half of the total cost of the stone. I would make more purchases if I was in the market for a lot of higher-priced gems, but for now it will be just every once in a while that I shop here.
That being said, I think that the prices for gems are fair and I will continue shopping with GemSelect for my higher-priced gems that I make for myself or for orders that want specific gems that I can only find here.