Achroite and Moissanite Physical Properties

Achroite

Moissanite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

none

1.3 Durability

Not Available

1.4 Specific Gravity

2.90-3.403.17-3.24

1 7.18

1.5 Fracture

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

Conchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle

1.6 Cleavage

Not Available

(0001) indistinct

1.7 Mohs Hardness

7-7.59-9.5

2 10

1.8 Chemical Composition

Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) Formula given for elbaite.

SiCArthur Thomas , Gemstones (2009)

Achroite and Moissanite Chemical Formula

While comparing Achroite and Moissanite 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 Achroite and Moissanite chemical formula.

Chemical formula of Achroite- Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) Formula given for elbaite.
Chemical formula of Moissanite- SiCArthur Thomas , Gemstones (2009)

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Achroite and Moissanite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Achroite and Moissanite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Achroite and Moissanite Optical Properties during the identification of gemstone. Specific gravity of Achroite is 3.17-3.24 whereas that of Moissanite is 3.17-3.24.