Rhodolite and Andalusite Physical Properties

Rhodolite

Andalusite

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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

3.843.05-3.21

1 7.18

1.5 Fracture

Conchoidal

Uneven, Subconchoidal, Uneven, Subconchoidal, Splintery, UnevenArthur Thomas, Gemstones (2009)

1.6 Cleavage

none, may show indistinct parting

Good on {110}, poor on {100}

1.7 Mohs Hardness

7-7.57.5

2 10

1.8 Chemical Composition

(Mg,Fe)₃Al₂Si₃O₁₂

Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references

Rhodolite and Andalusite Chemical Formula

While comparing Rhodolite and Andalusite 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 Rhodolite and Andalusite chemical formula.

Chemical formula of Rhodolite- (Mg,Fe)₃Al₂Si₃O₁₂
Chemical formula of Andalusite- Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references

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Rhodolite and Andalusite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Rhodolite and Andalusite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Rhodolite and Andalusite Optical Properties during the identification of gemstone. Specific gravity of Rhodolite is 3.05-3.21 whereas that of Andalusite is 3.05-3.21.