Kunzite and Alunite Physical Properties

Kunzite

Alunite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

Soluble

1.3 Durability

Not Available

1.4 Specific Gravity

3.15-3.21

2.6-2.9

1.5 Fracture

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

Conchoidal, Uneven

1.6 Cleavage

1,2 prismatic

On {0001}, perfect

1.7 Mohs Hardness

6-7

3.5-4

1.8 Chemical Composition

LiAlSi₂O₆

KAl3(SO4)2(OH)6

Kunzite and Alunite Chemical Formula

While comparing Kunzite and Alunite 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 Kunzite and Alunite chemical formula.

Chemical formula of Kunzite- LiAlSi₂O₆
Chemical formula of Alunite- KAl3(SO4)2(OH)6

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Kunzite and Alunite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Kunzite and Alunite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Kunzite and Alunite Optical Properties during the identification of gemstone. Specific gravity of Kunzite is 2.6-2.9 whereas that of Alunite is 2.6-2.9.