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Unlike many well-known gems that have been in use for centuries, tanzanite’s history is relatively modern.The common story of tanzanite’s discovery tells of Maasai herders who found blue crystals in the Merelani Hills near Arusha, Tanzania, while tending livestock in 1967.

Tanzanite measures 6.5 to 7 on the Mohs scale of hardness – which is not nearly as hard as the sapphire it often substitutes.Generally, tanzanite follows the same value parameters as diamonds.Buying from a reputable AGS jeweler will ensure that you get what you pay for.The government divided the mines into four sections, or blocks, in 1990.

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