WONDER #1892: Why Are Rubies Red?

Question 1 of 3

Rubies are a red version of what mineral?

1. corundum
2. pyrite
3. salt
4. diamond

Question 2 of 3

The red color of the ruby comes from the presence of what element in corundum?

1. oxygen
2. aluminum
3. chromium
4. nitrogen

Question 3 of 3

If you wanted to find rubies, which continent would you most likely travel to?

1. North America
2. South America
3. Asia
4. Antarctica

Check your answers online at https://wonderopolis.org/wonder/why-are-rubies-red.