Rhodizite
Chemical Formula: (K,Cs)Al4Be4(B,Be)12O28
Chemical Composition: Potassium, Cesium, Aluminium, Beryllium, Boron, Oxygen
Class: Borates
Crystal System: Cubic (Isometeric)
Crystal Habit: Dodecahedral
Hardness: 8
Density/Specific Gravity: 3.3 — 3.4
Refractive Index: 1.69
Double Refraction: Anomalous
Colour: Colourless, white, grey, yellow
Pleochroism: None
Transparency: Transparent – translucent
Lustre: Vitreous – adamantine
Luminescence: Piezoelectric and pyroelectric
Cleavage: Distinct
Fracture: Conchoidal
Dispersion: Nil
Healing Stone: No
Assigned Planet: No
Additional Zodiac Stone: No
Gemstone of the Month: No
Gemstone of the Week: No
Main Sources: Madagascar, Russia
