Gahnite and Agate Opal Physical Properties

Gahnite

Agate Opal

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1 Physical Properties

1.1 Tenacity

Not Available

1.4 Solubility

Not Available

1.7 Durability

Not Available

1.9 Specific Gravity

4.00-4.621.98-2.50

1 7.18

1.17 Fracture

Conchoidal, Uneven

Conchoidal, Conchoidal, Gemstones of the world (2001)

1.18 Cleavage

Indistinct parting on [111]

Not Available

1.19 Mohs Hardness

7.5-85.5-6.5

2 10

1.20 Chemical Composition

ZnAl 2O 4Michael OâDonoghue , Gems, Sixth Edition (2006)

SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001)

Gahnite and Agate Opal Chemical Formula

While comparing Gahnite and Agate 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 Gahnite and Agate Opal chemical formula.

Chemical formula of Gahnite- ZnAl 2O 4Michael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Agate Opal- SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001)

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Gahnite and Agate Opal Specific Gravity

Another important criteria for qualitative analysis of gemstones is Gahnite and Agate Opal Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Gahnite and Agate Opal Optical Properties during the identification of gemstone. Specific gravity of Gahnite is 1.98-2.50 whereas that of Agate Opal is 1.98-2.50.