Serpentine Natural Raw StonesSerpentine Physical Properties Chemical Classification: Silicate Colour: Usually green but is also available in black, yellow, white, and other shades Chemical Composition: (Mg,Fe,Ni,Al,Zn,Mn)2 3(Si,Al,Fe)2O5(OH)4 Mohs scale Hardness: 3 6 Specific Gravity: 2. 2 2. 9 Crystal System: Monoclinic Streak: White Lustre: Greasy to Waxy Diaphaneity: Translucent, Opaque, and rarely Transparent Cleavage: Poor to Perfect Analytical Properties: Colour, luster,
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