Kyanite

Kyanite – Al₂OSiO₄

Elements: Aluminum, Oxygen, Silicon

Class: Silicates – Nesosilicates

Crystal System: Triclinic

Hardness: 5.5-7

Orthoclase

Talc (1)Diamond (10)

Scratches glass. Harder than a steel knife.

Size: 11.9 x 7.1 x 5.1 cm Origin: Barra do Salinas district, Coronel Murta, Minas Gerais – Brazil

You might also like