Jade and Alunite Physical Properties

Jade

Alunite

Add ⊕

1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

Soluble

1.3 Durability

Not Available

1.4 Specific Gravity

2.90-3.382.6-2.9

1 7.18

1.5 Fracture

Gemstones of the world (2001), Difficult, Splintery

Conchoidal, Uneven

1.6 Cleavage

1 or 2,2 prismatic.

On {0001}, perfect

1.7 Mohs Hardness

6-73.5-4

2 10

1.8 Chemical Composition

Nephrite: Ca₂(Mg,Fe)₅Si₈O₂₂(OH)₂ Jadeite: NaAlSi₂O₆

KAl3(SO4)2(OH)6

Jade and Alunite Chemical Formula

While comparing Jade 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 Jade and Alunite chemical formula.

Chemical formula of Jade- Nephrite: Ca₂(Mg,Fe)₅Si₈O₂₂(OH)₂ Jadeite: NaAlSi₂O₆
Chemical formula of Alunite- KAl3(SO4)2(OH)6

Compare Semi Precious Gemstones

Jade Vs Turquoise

Jade Vs Peridot

Jade Vs Tourmaline

Jade and Alunite Specific Gravity

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