Popular gemstones and minerals with their hardness, color, and one identifying property, one stone per card.
41 cards · basic cards · AI-written, checked twice. Edit anything.
- Diamond - what is its hardness on the Mohs scale?
- 10
- What color is diamond typically?
- Colorless, though fancy colors exist
- What is diamond's key identifying property?
- Exceptional brilliance and light dispersion
- Ruby - hardness on the Mohs scale?
- 9
- What color is ruby?
- Red
- Ruby is the red variety of which mineral?
- Corundum
- Sapphire - hardness on the Mohs scale?
- 9
- What is the most common color of sapphire?
- Blue
- Sapphire is a variety of which mineral?
- Corundum
- Emerald - hardness on the Mohs scale?
- 7.5 to 8
- What color is emerald?
- Green
- Emerald is the green variety of which mineral?
- Beryl
- Amethyst - hardness on the Mohs scale?
- 7
- What color is amethyst?
- Purple or violet
- Amethyst is a purple variety of which mineral?
- Quartz