noun
- a hard crystalline mineral that occurs in various colors and is used as a gemstone
Examples
- The jeweler showed us a beautiful green tourmaline ring.
- Pink tourmaline is highly valued for its vibrant color.
- The mineral collection included specimens of black tourmaline.
- She wore earrings made with blue tourmaline stones.
- Tourmaline crystals can be found in granite pegmatites.
- The necklace featured a large watermelon tourmaline pendant.