Achroite and Rhodolite Physical Properties

Achroite

Rhodolite

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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

2.90-3.403.84

1 7.18

1.5 Fracture

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

Conchoidal

1.6 Cleavage

Not Available

none, may show indistinct parting

1.7 Mohs Hardness

7-7.57-7.5

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.

(Mg,Fe)₃Al₂Si₃O₁₂

Achroite and Rhodolite Chemical Formula

While comparing Achroite and Rhodolite 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 Rhodolite 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 Rhodolite- (Mg,Fe)₃Al₂Si₃O₁₂

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Achroite and Rhodolite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Achroite and Rhodolite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Achroite and Rhodolite Optical Properties during the identification of gemstone. Specific gravity of Achroite is 3.84 whereas that of Rhodolite is 3.84.