Jade and Sillimanite Physical Properties

Jade

Sillimanite

Add ⊕

1 Physical Properties

1.1 Tenacity

Not Available

Tough

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.90-3.383.20-3.26

1 7.18

1.5 Fracture

Gemstones of the world (2001), Difficult, Splintery

Splintery

1.6 Cleavage

1 or 2,2 prismatic.

{010} perfect

1.7 Mohs Hardness

6-76-7.5

2 10

1.8 Chemical Composition

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

Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)

Jade and Sillimanite Chemical Formula

While comparing Jade and Sillimanite 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 Sillimanite chemical formula.

Chemical formula of Jade- Nephrite: Ca₂(Mg,Fe)₅Si₈O₂₂(OH)₂ Jadeite: NaAlSi₂O₆
Chemical formula of Sillimanite- Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)

Compare Semi Precious Gemstones

Jade Vs Peridot

Jade Vs Tourmaline

Jade Vs Turquoise

Jade and Sillimanite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Jade and Sillimanite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Jade and Sillimanite Optical Properties during the identification of gemstone. Specific gravity of Jade is 3.20-3.26 whereas that of Sillimanite is 3.20-3.26.