Achroite and Forsterite Physical Properties

Achroite

Forsterite

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

2.90-3.40

Uneven, ConchoidalWalter Schumann

Indiscernible

7-7.5

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.

3.23-3.26

Conchoidal

Perfect on {010} imperfect on {100}

6.5-7

Mg 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)

Achroite and Forsterite Chemical Formula

While comparing Achroite and Forsterite 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 Forsterite chemical formula.

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Achroite and Forsterite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Achroite and Forsterite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Achroite Vs Forsterite during the identification of gemstone. Specific gravity of Achroite is whereas that of Forsterite is .