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Ruby Quiz: questions and answers

Ruby Quiz: questions and answers
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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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For each question choose one of the multiple answers then click done to check your results.

1. What is a ruby?

2. What is the name of the world's most valuable ruby?

3. Ruby is the birthstone for _____

4. What is the ruby's crystal system?

5. According to the Mohs scale of mineral hardness, what is the hardness of the rubies?

6. What is the color of ruby?

7. When were the first synthetic rubies invented?

8. In how many steps is the treatment of lead glass filling to the ruby?

9. Under what criteria are rubies classified?

10. What is the only country in mainland Europe to have naturally occurring rubies?

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