Fire Agate and Calcite Physical Properties

Fire Agate

Calcite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

Soluble

1.3 Durability

Not Available

1.4 Specific Gravity

2.60-2.642.67-2.73

1 7.18

1.5 Fracture

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

Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009), Brittle, Conchoidal

1.6 Cleavage

Absent

Perfect on [10 1 1] three directions with angle of 74° 55

1.7 Mohs Hardness

6.5-73

2 10

1.8 Chemical Composition

SiO 2Arthur Thomas , Gemstones (2009)

CaCO 3Ulrich Henn and Claudio C.

Fire Agate and Calcite Chemical Formula

While comparing Fire Agate and Calcite 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 Fire Agate and Calcite chemical formula.

Chemical formula of Fire Agate- SiO 2Arthur Thomas , Gemstones (2009)
Chemical formula of Calcite- CaCO 3Ulrich Henn and Claudio C.

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Fire Agate and Calcite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Fire Agate and Calcite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Fire Agate and Calcite Optical Properties during the identification of gemstone. Specific gravity of Fire Agate is 2.67-2.73 whereas that of Calcite is 2.67-2.73.