Spinel
At a glance
- Type
- Mineral
- Group
- Oxide
- Crystal system
- Cubic
- Hardness
- Very hard (over 7.5)
- Density
- Heavy (3.2 to 5)
- Occurs in
- Igneous rocks, Metamorphic rocks
- Foliation
- Not layered
- Colour
- Black, Red, Blue, Purple
- Lustre
- Glassy
- Use
- Gemstone
- Difficulty in WildGuessr
- Hard
Did you know?
- The Black Prince's Ruby in Britain's Imperial State Crown is not a ruby at all but a big red spinel.
- Spinel often grows beside ruby, so for centuries red spinels were mistaken for rubies.
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.
Similar stones
Classification, names and conservation status come from Wikidata (CC0), the photo from Wikimedia Commons. Wikidata Q191310 · All stones · All entries