Almandine and Andesine Physical Properties

Almandine

Andesine

Add ⊕

1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.95-4.30

2.65-2.69

1.5 Fracture

Conchoidal, Brittle, Conchoidal, Brittle, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle, Conchoidal

Uneven, Uneven, Conchoidal, Uneven, Gems, Sixth Edition (2006)

1.6 Cleavage

none

Perfect on {001}, good on {010}

1.7 Mohs Hardness

7-7.5

6-6.5

1.8 Chemical Composition

Fe 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)

(Na,Ca)Al_1-2Si_3-2O₈

Almandine and Andesine Chemical Formula

While comparing Almandine and Andesine 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 Almandine and Andesine chemical formula.

Chemical formula of Almandine- Fe 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)
Chemical formula of Andesine- (Na,Ca)Al_1-2Si_3-2O₈

Compare Red Gemstones

Almandine Vs Black Opal

Almandine Vs Aragonite

Almandine Vs Baryte Barite

Almandine and Andesine Specific Gravity

Another important criteria for qualitative analysis of gemstones is Almandine and Andesine Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Almandine and Andesine Optical Properties during the identification of gemstone. Specific gravity of Almandine is 2.65-2.69 whereas that of Andesine is 2.65-2.69.