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Black Opal
Black Opal

Rhodizite
Rhodizite



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Black Opal
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Rhodizite

Black Opal and Rhodizite Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
1.97-2.22
Conchoidal
None
6-6.5
SiO 2 + H 2OUlrich Henn and Claudio C.
 
-
-
-
3.34-3.44
Conchoidal
{111} Indistinct, {111} Indistinct, {111} Indistinct
8-8.5
(K,Cs)Al 4Be 4(B,Be) 12O 28Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Black Opal and Rhodizite Chemical Formula

While comparing Black Opal and Rhodizite physical properties, the important data you should know is its chemical composition. Since chemical formula defines the molecular structure of the crystal, most of the physical properties like color, tenacity, solubility are governed by Black Opal and Rhodizite chemical formula.

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Black Opal and Rhodizite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Black Opal and Rhodizite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Black Opal Vs Rhodizite during the identification of gemstone. Specific gravity of Black Opal is whereas that of Rhodizite is .