Andalusite and Emerald Physical Properties

Andalusite

Emerald

Add ⊕

Physical Properties

Tenacity

Solubility

Durability

Hard

Specific Gravity

3.05-3.212.67-2.78

1 7.18

👆🏻

Fracture

Uneven, Subconchoidal, Splintery

Uneven, ConchoidalWalter Schumann

Cleavage

Good on {110}, poor on {100}

Imperfect on the [0001]

Mohs Hardness

7.57.5-8

2 10

👆🏻

Chemical Composition

Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references

Be₃Al₂SiO₆

Andalusite and Emerald Chemical Formula

While comparing Andalusite and Emerald 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 Andalusite and Emerald chemical formula.

Chemical formula of Andalusite- Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
Chemical formula of Emerald- Be₃Al₂SiO₆

Compare Brown Gemstones

Andalusite Vs Apatite

Andalusite Vs Apophyllite

Andalusite Vs Aragonite

Andalusite and Emerald Specific Gravity

Another important criteria for qualitative analysis of gemstones is Andalusite and Emerald Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Andalusite and Emerald Optical Properties during the identification of gemstone. Specific gravity of Andalusite is 2.67-2.78 whereas that of Emerald is 2.67-2.78.