Andalusite and Demantoid Physical Properties

Andalusite

Demantoid

Add ⊕

1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.05-3.213.77-3.95

1 7.18

1.5 Fracture

Uneven, Subconchoidal, Uneven, Subconchoidal, Splintery, UnevenArthur Thomas, Gemstones (2009)

Not Available

1.6 Cleavage

Good on {110}, poor on {100}

Not Available

1.7 Mohs Hardness

7.56.5

2 10

1.8 Chemical Composition

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

Ca 3Fe 2(SiO 4) 3Ulrich Henn and Claudio C.

Andalusite and Demantoid Chemical Formula

While comparing Andalusite and Demantoid 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 Demantoid chemical formula.

Chemical formula of Andalusite- Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
Chemical formula of Demantoid- Ca 3Fe 2(SiO 4) 3Ulrich Henn and Claudio C.

Compare Brown Gemstones

Andalusite Vs Baddeleyite

Andalusite Vs Augite

Andalusite Vs Baryte Barite

Andalusite and Demantoid Specific Gravity

Another important criteria for qualitative analysis of gemstones is Andalusite and Demantoid Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Andalusite and Demantoid Optical Properties during the identification of gemstone. Specific gravity of Andalusite is 3.77-3.95 whereas that of Demantoid is 3.77-3.95.