Quiz Answers

1. What is the hardest natural material on earth?

Diamond — 10 on the Mohs scale.

2. Does “carat” measure a diamond’s size or its weight?

Weight.

3. What is the only gemstone made by a living creature?

Pearl — made by oysters and mussels.

4. Rubies and sapphires are both varieties of which mineral?

Corundum.

5. What is October’s birthstone?

Opal (tourmaline is also accepted).

6. What metal is usually alloyed with gold to make white gold?

Palladium.

7. Which gemstone was once believed to protect sailors at sea?

Aquamarine.

8. Which gemstone can float in salt water?

Amber.

9. Which gemstone did Princess Diana’s famous engagement ring feature?

Sapphire.

10. How many facets does a standard round brilliant-cut diamond have?

58.