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Achroite
Achroite

Ammolite
Ammolite



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Achroite
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Ammolite

Achroite and Ammolite Physical Properties

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Physical Properties

Tenacity

-
-

Solubility

-
-

Durability

-
-

Specific Gravity

2.90-3.402.75-2.80
1 7.18
👆🏻

Fracture

Uneven, ConchoidalWalter Schumann
Uneven, Granular

Cleavage

Indiscernible
no true cleavage

Mohs Hardness

7-7.54
2 10
👆🏻

Chemical Composition

Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) Formula given for elbaite.
CaCO3

Achroite and Ammolite Chemical Formula

While comparing Achroite and Ammolite 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 Achroite and Ammolite chemical formula.

  • Chemical formula of Achroite- Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) Formula given for elbaite.
  • Chemical formula of Ammolite- CaCO3

Achroite and Ammolite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Achroite and Ammolite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Achroite and Ammolite Optical Properties during the identification of gemstone. Specific gravity of Achroite is 2.75-2.80 whereas that of Ammolite is 2.75-2.80.