Gemstone Quiz: Rocks That Shine
See how gems form, how hard they are and what makes them sparkle.
- Questions
5 - Length
About 3 min
Spoiler: show the questions 5 questions
- Ruby and sapphire are the same mineral, corundum. What makes a stone a ruby?
- Put these minerals in order from softest to hardest.
- Which of these gems are made by living things?
- Volcanic eruptions carry natural diamonds upward. Where do most of them form?
- Why does a cut diamond flash rainbow colors?