Quartz and Carnelian Physical Properties

Quartz

Carnelian

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.65

2.58-2.64

1.5 Fracture

Conchoidal, Conchoidal, Brittle, Gems

Uneven, Splintery, Conchoidal, UnevenWalter Schumann, Gemstones of the world (2001)

1.6 Cleavage

{0110} Indistinct

Absent

1.7 Mohs Hardness

6.5-7

1.8 Chemical Composition

SiO₂

Quartz and Carnelian Chemical Formula

While comparing Quartz and Carnelian 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 Quartz and Carnelian chemical formula.

Chemical formula of Quartz- SiO₂
Chemical formula of Carnelian- SiO₂

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Quartz and Carnelian Specific Gravity

Another important criteria for qualitative analysis of gemstones is Quartz and Carnelian Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Quartz and Carnelian Optical Properties during the identification of gemstone. Specific gravity of Quartz is 2.58-2.64 whereas that of Carnelian is 2.58-2.64.