- Size: 16x12 mm
- Shape: Oval Cabochon-Cut
- Colour: Grey with Rainbow-Effect
- Clarity: Opaque
- Lustre: Good Polish
- Origin: Africa
- Hardness: 6 - 6.5
- Specific Gravity: 2.7 - 2.74
- Refractive Index: 1.55 - 1.75
- Chemical Composition: CaNa(Al,Si)ALSi208, Calcium Sodium Aluminium Silicate
- Crystal Structure: Triclinic
THIS IS A NATURALLY MINED & CUT STONE