×

Sillimanite
Sillimanite

Tanzanite
Tanzanite



ADD
Compare
X
Sillimanite
X
Tanzanite

Sillimanite and Tanzanite Physical Properties

1 Physical Properties
1.1 Tenacity
Tough
Not Available
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Hard
1.4 Specific Gravity
3.20-3.263.35
Amber
1 7.18
1.5 Fracture
Splintery
Uneven, Conchoidal, UnevenWalter Schumann, Gemstones of the world (2001)
1.6 Cleavage
{010} perfect
Perfect {010}, imperfect {100}
1.7 Mohs Hardness
6-7.56.5-7
Amber
2 10
1.8 Chemical Composition
Al 2SiO 5Michael O’Donoghue , Gems, Sixth Edition (2006)
Ca2Al3(SiO4)3(OH)

Sillimanite and Tanzanite Chemical Formula

While comparing Sillimanite and Tanzanite 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 Sillimanite and Tanzanite chemical formula.

  • Chemical formula of Sillimanite- Al 2SiO 5Michael O’Donoghue , Gems, Sixth Edition (2006)
  • Chemical formula of Tanzanite- Ca2Al3(SiO4)3(OH)

Sillimanite and Tanzanite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Sillimanite and Tanzanite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sillimanite and Tanzanite Optical Properties during the identification of gemstone. Specific gravity of Sillimanite is 3.35 whereas that of Tanzanite is 3.35.