Alabaster and Labradorite Physical Properties

Alabaster

Labradorite

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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

2.302.69-2.72

1 7.18

1.5 Fracture

Not Available

Uneven, Conchoidal, Gems, Sixth Edition (2006)

1.6 Cleavage

Not Available

Perfect on {001}, less perfect on {010}, intersecting at near 90°; distinct on {110}

1.7 Mohs Hardness

26-6.5

2 10

1.8 Chemical Composition

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

(Na,Ca)_1-2Si_3-2O₈

Alabaster and Labradorite Chemical Formula

While comparing Alabaster and Labradorite 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 Labradorite chemical formula.

Chemical formula of Alabaster- CaSO 4 · 2H 2OWalter Schumann , Gemstones of the world (2001)
Chemical formula of Labradorite- (Na,Ca)_1-2Si_3-2O₈

Compare Brown Gemstones

Alabaster Vs Anthophyllite

Alabaster Vs Anhydrite

Alabaster Vs Astrophyllite

Alabaster and Labradorite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Alabaster and Labradorite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Alabaster and Labradorite Optical Properties during the identification of gemstone. Specific gravity of Alabaster is 2.69-2.72 whereas that of Labradorite is 2.69-2.72.