Opal and Axinite Physical Properties

Opal

Axinite

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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

1.98-2.253.26-3.36

1 7.18

1.5 Fracture

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

Conchoidal, ConchoidalArthur Thomas, Gemstones (2009)

1.6 Cleavage

None

Good on {100}

1.7 Mohs Hardness

5-6.56.5-7

2 10

1.8 Chemical Composition

SiO₂ · nH₂O

(Ca,Fe,Mn,Mg) 3Al 2BSi 4O 15(OH)Walter Schumann , Gemstones of the world (2001) More from other references

Opal and Axinite Chemical Formula

While comparing Opal and Axinite 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 Axinite chemical formula.

Chemical formula of Opal- SiO₂ · nH₂O
Chemical formula of Axinite- (Ca,Fe,Mn,Mg) 3Al 2BSi 4O 15(OH)Walter Schumann , Gemstones of the world (2001) More from other references

Compare Semi Precious Gemstones

Opal Vs Amethyst

Opal Vs Alexandrite

Opal Vs Lehsunia

Opal and Axinite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Opal and Axinite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Opal and Axinite Optical Properties during the identification of gemstone. Specific gravity of Opal is 3.26-3.36 whereas that of Axinite is 3.26-3.36.