Opal and Rhodolite Physical Properties

Opal

Rhodolite

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1 Physical Properties

1.1 Tenacity

BrittleWalter Schumann

Not Available

1.2 Solubility

hot salt water

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

1.98-2.253.84

1 7.18

1.5 Fracture

Conchoidal, Conchoidal, Gemstones of the world (2001) More from other references, Brittle

Conchoidal

1.6 Cleavage

None

none, may show indistinct parting

1.7 Mohs Hardness

5-6.57-7.5

2 10

1.8 Chemical Composition

SiO₂ · nH₂O

(Mg,Fe)₃Al₂Si₃O₁₂

Opal and Rhodolite Chemical Formula

While comparing Opal and Rhodolite 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 Opal and Rhodolite chemical formula.

Chemical formula of Opal- SiO₂ · nH₂O
Chemical formula of Rhodolite- (Mg,Fe)₃Al₂Si₃O₁₂

Compare Semi Precious Gemstones

Opal Vs Amethyst

Opal Vs Alexandrite

Opal Vs Lehsunia

Opal and Rhodolite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Opal and Rhodolite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Opal and Rhodolite Optical Properties during the identification of gemstone. Specific gravity of Opal is 3.84 whereas that of Rhodolite is 3.84.