Moonstone and Black Opal Physical Properties

Moonstone

Black Opal

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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

2.56-2.601.97-2.22

1 7.18

1.5 Fracture

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

ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)

1.6 Cleavage

2,1 basal ; 2,1 prismatic ; 3,1 pinacoidal

Not Available

1.7 Mohs Hardness

6-6.56-6.5

2 10

1.8 Chemical Composition

Plagioclase Feldspar s: (Na,Ca)Al_1-2Si_3-2O₈ Orthoclase Feldspar : KAlSi₃O₈

SiO 2 + H 2OUlrich Henn and Claudio C.

Moonstone and Black Opal Chemical Formula

While comparing Moonstone and Black 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 Moonstone and Black Opal chemical formula.

Chemical formula of Moonstone- Plagioclase Feldspar s: (Na,Ca)Al_1-2Si_3-2O₈ Orthoclase Feldspar : KAlSi₃O₈
Chemical formula of Black Opal- SiO 2 + H 2OUlrich Henn and Claudio C.

Compare Semi Precious Gemstones

Moonstone Vs Lehsunia

Moonstone Vs Alexandrite

Moonstone Vs Peridot

Moonstone and Black Opal Specific Gravity

Another important criteria for qualitative analysis of gemstones is Moonstone and Black Opal Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Moonstone and Black Opal Optical Properties during the identification of gemstone. Specific gravity of Moonstone is 1.97-2.22 whereas that of Black Opal is 1.97-2.22.