Ruby
At a glance
- Type
- Mineral
- Group
- Oxide
- Crystal system
- Trigonal
- Hardness
- Very hard (over 7.5)
- Colour
- Red, Pink
- Lustre
- Glassy, Brilliant
- Use
- Gemstone
- Difficulty in WildGuessr
- Easy
Did you know?
- The first working laser, built in 1960, used a synthetic ruby crystal to make its beam.
- The Mogok valley in Myanmar has been a famous source of fine rubies for centuries.
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 Q43088 · All stones · All entries