Tanzanite is a violet-blue stone first found in Tanzania in 1968 by a miner searching for sapphires. The color in this stone was caused by an ancient meteor that struck the area near Arusha, Tanzania millions of years ago, depositing the element vanadium throughout the area. Most Tanzanite is heat-treated to bring out the intense blue color. Rarely, Tanzanite is found in green, pink and yellow colors. The hardness is 6.5 to 7 on the Moh’s Hardness Scale. Due to its coloring, Tanzanite is sometimes confused with blue sapphire and amethyst.

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