- Color: yellowish green, brownish green
- Hardness: 6.5 - 7
- Refractive index: 1.64 - 1.69
- Density: 3.20 - 3.50
- Chemical composition: (Mg, Fe)[SiO4]
- Crystal structure: orthorhombic
- Lustre: vitreous, greasy
- Origins: China, Burma, Pakistan, USA, East Africa, South Africa, Brazil, Norway, Egypt.
Prices of peridot (olivine) highly depend on the stone's clarity. Best stones have vivid yellowish green color. Peridots are generally not treated.