Crystal of Dioptase

“...represents a crystal of dioptase with the fundamental rhombohedron (r) and the hexagonal prism of the second order (m) combined with the rhombohedron (s).” -The Encyclopedia Britannica 1910

Keywords

crystal, prism, hexagonal, rhombohedron, dioptase

Galleries

Crystals

Source

Encyclopaedia Britannica (11th ed., vol. 7) (New York, NY: The Encyclopaedia Britannica Company, 1910)

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