Rosasite and Grandidierite Physical Properties

Rosasite

Grandidierite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Effervesces in cold

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

4-4.22.85-3.00

1 7.18

1.5 Fracture

Splintery

Brittle, UnevenArthur Thomas, Gemstones (2009), Brittle, Uneven

1.6 Cleavage

Perfect on {100} and {010}

Perfect

1.7 Mohs Hardness

47.5

2 10

1.8 Chemical Composition

Not Available

(Mg,Fe)Al 3(BO 4)(SiO 4)OUlrich Henn and Claudio C.

Rosasite and Grandidierite Chemical Formula

While comparing Rosasite and Grandidierite 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 Rosasite and Grandidierite chemical formula.

Chemical formula of Grandidierite- (Mg,Fe)Al 3(BO 4)(SiO 4)OUlrich Henn and Claudio C.

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Rosasite and Grandidierite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Rosasite and Grandidierite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Rosasite and Grandidierite Optical Properties during the identification of gemstone. Specific gravity of Rosasite is 2.85-3.00 whereas that of Grandidierite is 2.85-3.00.