This is an Adamite Crystals on Limonite matrix mined in Mina Ojuela

The environment was also anoxic

3 grams and measures 21x17x17 mm

Weight: 113 Grams / 3

Tanzanite | Octagon Cut | 5.6x3.8mm 0.6ct | Tanzania | SO24 Titanite This is an Adamite CrystalsProduct Type: Tanzanite Approx Weight (per piece): 0. 6ct Size: 5. 6x3. 8mm Shape: Octagon Cut Color: Purplish Blue Clarity: Clean to the eye Origin: Tanzania Tanzanite is renowned for its intense blue and violet colors, but can also be golden, green, lilac and peacock (blue and green). The sole source of tanzanite is the Merelani Hills in northern Tanzania. Discovered in the 1960s, tanzanite is considered rarer than diamonds due to its single source