I love this gorgeous gem not familiar to most people. The trade name is "Titanite". Sphene has the second highest dispersion 'fire' of any stone, the highest being demantoid garnet. The third highest is diamond.
Natural bi-color sapphire - CT - so beautiful!
22 carat, "cornflower blue", Ceylon sapphire: Color Description Slightly greenish blue to violetish blue Genuine sapphires, part of the Corundum gem family. Mohs' hardness rating of
Demantoid means “diamond like,” and the gem displays an adamantine luster with amazing brilliance and dispersion. Gems larger than a few carats are extremely rare. Dematoid gems are usually high in.