Hi Mel, There isn’t too much known about the mineral carmeltazite at this time. This entry in Mindat has information. A few years ago we also had a longer Forum post regarding this material. Keep in mind that so far, carmeltazite has only been found as microscopic crystals within other minerals, such as corundum. You would need the ability to analyze microscopic inclusions to try to identify this material. Also, keep in mind that some stones are being marketed as “Carmel Sapphires” because these sapphires from Mount Carmel are said to contain carmeltazite, but the Carmel Sapphires themselves aren’t the carmeltazites. They’re just corundum with inclusions.
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