Spinel

Spinel occours in red, violet and blue, but is most famous for its deep red variety that closely resembles Ruby. Spinel and Ruby can be very difficult to distinguish, they look identical and are found in the same localities. Many famous old “Rubies” were discovered to be in fact Spinel. Fine red Spinel is actually rarer than Ruby of equal color. Gem Spinel is in very limited in supply.