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Lawsonite and Precious Opal Physical Properties


Physical Properties

Tenacity
Not Available   
Brittle   

Solubility
Not Available   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
1.98-2.25   
3.09   

Fracture
Conchoidal, Conchoidal, Gemstones of the world (2001) More from other references   
White, Yellow, Pale blue, Brittle, Uneven   

Cleavage
Not Available   
Perfect on {100} and {010}, imperfect on {101}   

Mohs Hardness
5-6.5   
8   

Chemical Composition
SiO 2 · nH 2OGemdat.org , Management Team (2012)   
Not Available   

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