1. Blue Diamond – $3.93 million per carat

2. Jadeite – $3 million per carat

3. Pink Diamond – $1.19 million per carat

4. Red Diamond – $1,000,000 per carat

5. Emerald – $305,000 per carat

6. Taaffeite – $35,000 per carat

7. Grandidierite – $20,000 per carat

8. Serendibite – $18,000 per carat

9. Diamond – $15,000 per carat

10. Black Opal – $15,000 per carat