Tanzanite
At a glance
- Type
- Mineral
- Group
- Silicate
- Crystal system
- Orthorhombic
- Hardness
- Hard (5.5 to 7.5)
- Density
- Heavy (3.2 to 5)
- Occurs in
- Metamorphic rocks
- Foliation
- Not layered
- Colour
- Blue, Purple
- Lustre
- Glassy
- Use
- Gemstone
- Difficulty in WildGuessr
- Medium
Did you know?
- Gem-quality tanzanite was found in 1967 in the Merelani Hills of Tanzania, and nowhere else in the world in quantity.
- Heating brownish crystals of tanzanite turns them into the famous blue-violet stones sold as jewels.
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Classification, names and conservation status come from Wikidata (CC0), the photo from Wikimedia Commons. Wikidata Q429942 · All stones · All entries