Rossmanite and Turquoise Physical Properties

Rossmanite

Turquoise

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

Soluble

1.3 Durability

Not Available

1.4 Specific Gravity

32.30-2.90

1 7.18

1.5 Fracture

Brittle, Metallic

Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle

1.6 Cleavage

None

Good to perfect_usually N/A

1.7 Mohs Hardness

Not Available5-6

2 10

1.8 Chemical Composition

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

CuAl₆(PO₄)₄(OH)₈ • 4H₂O

Rossmanite and Turquoise Chemical Formula

While comparing Rossmanite and Turquoise 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 Turquoise 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 Turquoise- CuAl₆(PO₄)₄(OH)₈ • 4H₂O

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Rossmanite and Turquoise Specific Gravity

Another important criteria for qualitative analysis of gemstones is Rossmanite and Turquoise Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Rossmanite and Turquoise Optical Properties during the identification of gemstone. Specific gravity of Rossmanite is 2.30-2.90 whereas that of Turquoise is 2.30-2.90.