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Common Opal and Milarite Physical Properties


Milarite and Common Opal Physical Properties


Physical Properties

Tenacity
Not Available   
Not Available   

Solubility
Not Available   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
1.98-2.50   
2.52-2.60   

Fracture
Conchoidal, Conchoidal, Gemstones of the world (2001)   
Uneven, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Brittle, Metallic   

Cleavage
Not Available   
{0001} Imperfect, {1120} Imperfect   

Mohs Hardness
5.5-6.5   
5.5-6   

Chemical Composition
SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001)   
KCa 2AlBe 2Si 12O 30 · 0.5H 2OMichael O’Donoghue , Gems, Sixth Edition (2006) More from other references   

Optical Properties >>
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Common Opal and Milarite Chemical Formula

While comparing Common Opal and Milarite 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 Common Opal and Milarite chemical formula.

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Common Opal and Milarite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Common Opal and Milarite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Common Opal and Milarite Optical Properties during the identification of gemstone. Specific gravity of Common Opal is 2.52-2.60 whereas that of Milarite is 2.52-2.60.

Blue Gemstones

Blue Gemstones


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