Alexandrite
At a glance
- Type
- Mineral
- Group
- Oxide
- Crystal system
- Orthorhombic
- Hardness
- Very hard (over 7.5)
- Density
- Heavy (3.2 to 5)
- Occurs in
- Igneous rocks, Metamorphic rocks
- Foliation
- Not layered
- Colour
- Red, Green, Purple
- Lustre
- Glassy
- Use
- Gemstone
- Difficulty in WildGuessr
- Hard
Did you know?
- Alexandrite looks green in daylight and reddish in candlelight, a colour change that few gems show so clearly.
- It was named after the future tsar Alexander II, after it was found in the Ural Mountains in the 1830s.
Could you guess it from clues?
WildGuessr picks a secret animal, plant, fungus, stone, prehistoric creature or space object and you ask yes-or-no questions about it, such as its group or where it grows. The fewer clues you need, the more points you score.
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Classification, names and conservation status come from Wikidata (CC0), the photo from Wikimedia Commons. Wikidata Q1765371 · All stones · All entries