Hiddenite and Opal Physical Properties

Hiddenite

Opal

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1 Physical Properties

1.1 Tenacity

Not Available

BrittleWalter Schumann

1.2 Solubility

Not Available

hot salt water

1.3 Durability

Not Available

1.4 Specific Gravity

3.15-3.21

1.98-2.25

1.5 Fracture

Gemstones of the world (2001), UnevenWalter Schumann, Gemstones of the world (2001)

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

1.6 Cleavage

1,2 prismatic

None

1.7 Mohs Hardness

6-7

5-6.5

1.8 Chemical Composition

LiAlSi₂O₆

SiO₂ · nH₂O

Hiddenite and Opal Chemical Formula

While comparing Hiddenite and Opal 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 Hiddenite and Opal chemical formula.

Chemical formula of Hiddenite- LiAlSi₂O₆
Chemical formula of Opal- SiO₂ · nH₂O

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Hiddenite and Opal Specific Gravity

Another important criteria for qualitative analysis of gemstones is Hiddenite and Opal Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Hiddenite and Opal Optical Properties during the identification of gemstone. Specific gravity of Hiddenite is 1.98-2.25 whereas that of Opal is 1.98-2.25.