The main sources of Spinel are Myanmar (Burma), Cambodia and Sri Lanka with other deposits found all over the world.
Natural Red Spinel has been mistaken for Ruby, and the "Black Prince’s Ruby" in the English Crown is actually a Red Spinel.
Registering as an 8 on the Moh's scale of hardness, Spinel is perfect for all types of jewelry.
Synthetic Spinel has been on the market for about 100 years, and this should not be confused with Natural Spinel.