Tourmaline
Tourmaline, a clear translucent gem, is said to exhilerate the spirit. It occurs in a deep green, pink, red, blue, brown and yellow.
- Hardness: 7-7.5
- Refractive Index: 1.624-1.644
- Green and blue are commonly heated to improve color
Tourmaline, a clear translucent gem, is said to exhilerate the spirit. It occurs in a deep green, pink, red, blue, brown and yellow.