Rossmanite and Almandine Physical Properties

Rossmanite

Almandine

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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

33.95-4.30

1 7.18

1.5 Fracture

Brittle, Metallic

Conchoidal, Brittle, Conchoidal, Brittle, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle, Conchoidal

1.6 Cleavage

None

none

1.7 Mohs Hardness

Not Available7-7.5

2 10

1.8 Chemical Composition

◻(LiAl 2)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)

Fe 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)

Rossmanite and Almandine Chemical Formula

While comparing Rossmanite and Almandine 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 Rossmanite and Almandine chemical formula.

Chemical formula of Rossmanite- ◻(LiAl 2)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)
Chemical formula of Almandine- Fe 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)

Compare Gems Found in America

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Rossmanite and Almandine Specific Gravity

Another important criteria for qualitative analysis of gemstones is Rossmanite and Almandine Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Rossmanite and Almandine Optical Properties during the identification of gemstone. Specific gravity of Rossmanite is 3.95-4.30 whereas that of Almandine is 3.95-4.30.