Achroite and Rock Crystal Physical Properties

Achroite

Rock Crystal

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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.

2.65

ConchoidalWalter Schumann

None

SiO 2Walter Schumann , Gemstones of the world (2001)

Achroite and Rock Crystal Chemical Formula

While comparing Achroite and Rock Crystal 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 Rock Crystal chemical formula.

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Achroite and Rock Crystal Specific Gravity

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