Hercynite and Moldavite Physical Properties

Hercynite

Moldavite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

4.392.32-2.38

1 7.18

1.5 Fracture

ConchoidalGemdat.org, Uneven

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

1.6 Cleavage

{111} Indistinct, {111} Indistinct, {111} Indistinct

Not Available

1.7 Mohs Hardness

7.5-85.5

2 10

1.8 Chemical Composition

Fe2+ Al 2O 4Gemdat.org , Management Team (2012)

SiO 2(+Al 2O 3)Walter Schumann , Gemstones of the world (2001)

Hercynite and Moldavite Chemical Formula

While comparing Hercynite and Moldavite 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 Hercynite and Moldavite chemical formula.

Chemical formula of Hercynite- Fe2+ Al 2O 4Gemdat.org , Management Team (2012)
Chemical formula of Moldavite- SiO 2(+Al 2O 3)Walter Schumann , Gemstones of the world (2001)

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Hercynite and Moldavite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Hercynite and Moldavite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Hercynite and Moldavite Optical Properties during the identification of gemstone. Specific gravity of Hercynite is 2.32-2.38 whereas that of Moldavite is 2.32-2.38.