| Question | Answer |
| Diamond is an allotrope of what element? | |
| What does it score on the Mohs hardness scale? | |
| The major ore containing diamonds is known as | |
| The major diamond mining countries are: 1 | |
| 2 | |
| 3 | |
| 4 | |
| 5 | |
| 6 | |
| The largest diamond company in the world is | |
| Most of the world's diamonds are traded through which European city? | |
| Most of the world's diamonds are polished in which Asian city? | |
| The Four Cs are: 1 | |
| 2 | |
| 3 | |
| 4 | |
| One carat is equivalent to how many milligrams? | |
| One carat can be divided in 100 what? | |
| The largest diamond certification laboratories are: 1 | |
| 2 | |
| 3 | |
| 4 | |