has a super rare steel blur color. Most blue spinels contain Cobalt but this gem does not. The blue is incredible with a steely luster.
the great impostor of gemstone history: many famous rubies in crown jewels
around the world are actually spinels. The most famous is the Black Prince’s
ruby, a magnificent 170-carat red spinel that now adorns the Imperial State
Crown of England in the British Crown Jewels. Recently gem quality spinels were
also found in the marbles of Luc Yen (Vietnam), Mahenge and Matombo (Tanzania),
Tsavo (Kenya) and in the gravels of Tunduru (Tanzania) and Ilakaka (Madagascar).