Clipart tagged: ‘dipotase’

Dioptase is an intense emerald-green to bluish-green copper cyclosilicate mineral. It is transparent to translucent. Its luster is vitreous to sub-adamantine. Its formula is CuSiO<small><sub>3</sub></small>⋅H<small><sub>2</sub></small>O (also reported as CuSiO<small><sub>2</sub></small>(OH)<small><sub>2</sub></small>). It has a hardness of 5, the same as tooth enamel. It specific gravity is 3.28–3.35, and it has two perfect and one very good cleavage directions. Additionally, dioptase is very fragile and specimens must be handled with great care. It is a trigonal mineral, forming 6-sided crystals that are terminated by rhombohedra.

Dioptase

Dioptase is an intense emerald-green to bluish-green copper cyclosilicate mineral. It is transparent…

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