Quartz & hematite

Quartz – SiO₂

Elements: Silicon, Oxygen

Class: Silicates – Tectosilicates

Crystal System: Hexagonal

Hardness: 7

Quartz

Talc (1)Diamond (10)

Very hard. Scratches glass and steel.

Hematite – Fe₂O₃

Elements: Iron, Oxygen

Class: Oxides

Crystal System: Hexagonal

Hardness: 5-6

Orthoclase

Talc (1)Diamond (10)

About as hard as a steel knife blade.

Origin: Jinlong Hill, Longchuan co, Heyuan, Guangdong – China

More Hexagonal specimens