Alexandrite and Siderite Physical Properties

Alexandrite

Siderite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.69-3.813.83-3.89

1 7.18

1.5 Fracture

Not Available

Uneven, Conchoidal, UnevenArthur Thomas, Brittle

1.6 Cleavage

1,1 ; 3,2.

Perfect on {01 1 1}

1.7 Mohs Hardness

8.53.5-4.5

2 10

1.8 Chemical Composition

BeAl ₂ O ₄

Fe2+ CO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Alexandrite and Siderite Chemical Formula

While comparing Alexandrite and Siderite 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 Alexandrite and Siderite chemical formula.

Chemical formula of Alexandrite- BeAl ₂ O ₄
Chemical formula of Siderite- Fe2+ CO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Alexandrite Vs Citrine

Alexandrite and Siderite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Alexandrite and Siderite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Alexandrite and Siderite Optical Properties during the identification of gemstone. Specific gravity of Alexandrite is 3.83-3.89 whereas that of Siderite is 3.83-3.89.