Alunite and Agate Physical Properties

Alunite

Agate

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Soluble

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.6-2.92.60-2.64

1 7.18

1.4 Fracture

Conchoidal, Uneven

Conchoidal, UnevenWalter Schumann, Gemstones of the world (2001)

1.5 Cleavage

On {0001}, perfect

Indiscernible

1.6 Mohs Hardness

3.5-46.5-7

2 10

1.7 Chemical Composition

KAl3(SO4)2(OH)6

SiO₂

Alunite and Agate Chemical Formula

While comparing Alunite and Agate 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 Alunite and Agate chemical formula.

Chemical formula of Alunite- KAl3(SO4)2(OH)6
Chemical formula of Agate- SiO₂

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Alunite and Agate Specific Gravity

Another important criteria for qualitative analysis of gemstones is Alunite and Agate Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Alunite and Agate Optical Properties during the identification of gemstone. Specific gravity of Alunite is 2.60-2.64 whereas that of Agate is 2.60-2.64.