Alabaster and Dumortierite Physical Properties

Alabaster

Dumortierite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.303.26-3.41

1 7.18

1.5 Fracture

Not Available

Fibrous, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references

1.6 Cleavage

Not Available

Distinct on {100}, poor on {110}; parting on {001}

1.7 Mohs Hardness

27-8.5

2 10

1.8 Chemical Composition

CaSO 4 · 2H 2OWalter Schumann , Gemstones of the world (2001)

AlAl₆O₃BSi₃O₁₈

Alabaster and Dumortierite Chemical Formula

While comparing Alabaster and Dumortierite 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 Alabaster and Dumortierite chemical formula.

Chemical formula of Alabaster- CaSO 4 · 2H 2OWalter Schumann , Gemstones of the world (2001)
Chemical formula of Dumortierite- AlAl₆O₃BSi₃O₁₈

Compare Brown Gemstones

Alabaster Vs Anthophyllite

Alabaster Vs Anhydrite

Alabaster Vs Astrophyllite

Alabaster and Dumortierite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Alabaster and Dumortierite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Alabaster and Dumortierite Optical Properties during the identification of gemstone. Specific gravity of Alabaster is 3.26-3.41 whereas that of Dumortierite is 3.26-3.41.