Schorl and Crystal Opal Physical Properties

Schorl

Crystal Opal

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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

3.18-3.221.97-2.22

1 7.18

1.5 Fracture

Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle, Conchoidal

ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)

1.6 Cleavage

{1011} Indistinct

Not Available

1.7 Mohs Hardness

Not Available5.5-6.5

2 10

1.8 Chemical Composition

Na(Fe2+3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)

SiO 2 + H 2OUlrich Henn and Claudio C.

Schorl and Crystal Opal Chemical Formula

While comparing Schorl and Crystal Opal 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 Schorl and Crystal Opal chemical formula.

Chemical formula of Schorl- Na(Fe2+3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)
Chemical formula of Crystal Opal- SiO 2 + H 2OUlrich Henn and Claudio C.

Compare Black Gemstones

Schorl Vs Xenotime

Schorl Vs Triplite

Schorl Vs Snowflake Obsidian

Schorl and Crystal Opal Specific Gravity

Another important criteria for qualitative analysis of gemstones is Schorl and Crystal Opal Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Schorl and Crystal Opal Optical Properties during the identification of gemstone. Specific gravity of Schorl is 1.97-2.22 whereas that of Crystal Opal is 1.97-2.22.