Precious Opal and Super Seven Crystals Physical Properties

Precious Opal

Super Seven Crystals

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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

1.98-2.252.9

1 7.18

1.5 Fracture

Conchoidal, Conchoidal, Gemstones of the world (2001) More from other references

Fibrous

1.6 Cleavage

Not Available

[010] Perfect, [100] Distinct, [011] Distinct

1.7 Mohs Hardness

5-6.52

2 10

1.8 Chemical Composition

SiO 2 · nH 2OGemdat.org , Management Team (2012)

Not Available

Precious Opal and Super Seven Crystals Chemical Formula

While comparing Precious Opal and Super Seven Crystals 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 Precious Opal and Super Seven Crystals chemical formula.

Chemical formula of Precious Opal- SiO 2 · nH 2OGemdat.org , Management Team (2012)

Compare Blue Gemstones

Precious Opal Vs Sapphire

Precious Opal Vs Sardonyx

Precious Opal Vs Sard

Precious Opal and Super Seven Crystals Specific Gravity

Another important criteria for qualitative analysis of gemstones is Precious Opal and Super Seven Crystals Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Precious Opal and Super Seven Crystals Optical Properties during the identification of gemstone. Specific gravity of Precious Opal is 2.9 whereas that of Super Seven Crystals is 2.9.