Elbaite and Star Sapphire Physical Properties

Elbaite

Star Sapphire

Add ⊕

1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.90-3.103.90-4.05

1 7.18

1.5 Fracture

Uneven, Conchoidal, Brittle, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle

Not Available

1.6 Cleavage

Poor/indistinct on {1120} and {1011}

Not Available

1.7 Mohs Hardness

7Not Available

2 10

1.8 Chemical Composition

Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) More from other references

Al 2O 3Ulrich Henn and Claudio C.

Elbaite and Star Sapphire Chemical Formula

While comparing Elbaite and Star Sapphire 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 Elbaite and Star Sapphire chemical formula.

Chemical formula of Elbaite- Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) More from other references
Chemical formula of Star Sapphire- Al 2O 3Ulrich Henn and Claudio C.

Compare Blue Gemstones

Elbaite Vs Gahnite

Elbaite Vs Hackmanite

Elbaite Vs Gahnospinel

Elbaite and Star Sapphire Specific Gravity

Another important criteria for qualitative analysis of gemstones is Elbaite and Star Sapphire Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Elbaite and Star Sapphire Optical Properties during the identification of gemstone. Specific gravity of Elbaite is 3.90-4.05 whereas that of Star Sapphire is 3.90-4.05.