| To use the quiz, hold you mouse over a mineral. An image will appear with the name. If you do not know the hardness, place you mouse over the "Answer" block and click to get the answer. |
| Mineral | Hardness | |
| Apatite | Answer | |
| Calcite | |
|
| Corundum | Answer | |
| Diamond | Answer | |
| Feldspar | Answer | |
| Fluorite | Answer | |
| Gypsum | Answer | |
| Quartz | Answer | |
| Talc | Answer | |
| Topaz | Answer |
