Collection: Anatase

Formula: TiO₂

Colour: Brown, pale yellow or reddish-brown, indigo, black; pale green, pale lilac, grey, rarely nearly colorless; brown, yellow-brown, pale green, blue in transmitted light.

Luster: Adamantine, Metallic

Hardness: 5½ - 6

Specific Gravity: 3.79 - 3.97

Crystal System: Tetragonal