Ruby Quiz: questions and answers
Free online printable quiz with multiple-choice questions (MCQ) without registration.
This blood-red colored gemstone is a variety of the mineral corundum. Play the quiz and check what do you know about this precious stone.
Ruby Quiz consists of multiple-choice questions about the stated topic.
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1. What is a ruby?
A gemstone
2. What is the name of the world's most valuable ruby?
Sunrise Ruby
3. Ruby is the birthstone for _____
July
4. What is the ruby's crystal system?
Trigonal
5. According to the Mohs scale of mineral hardness, what is the hardness of the rubies?
9
6. What is the color of ruby?
Pink to blood red
7. When were the first synthetic rubies invented?
1837
8. In how many steps is the treatment of lead glass filling to the ruby?
4 steps
9. Under what criteria are rubies classified?
The four Cs
10. What is the only country in mainland Europe to have naturally occurring rubies?
Macedonia