Rock Crystal and Friedelite Physical Properties

Rock Crystal

Friedelite

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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

2.653.06-3.19

1 7.18

1.5 Fracture

ConchoidalWalter Schumann, Gemstones of the world (2001), ConchoidalWalter Schumann, Gemstones of the world (2001)

UnevenArthur Thomas, Gemstones (2009) Tough, UnevenArthur Thomas, Gemstones (2009) Tough, Brittle, Uneven

1.6 Cleavage

Not Available

{010} Perfect

1.7 Mohs Hardness

74-5

2 10

1.8 Chemical Composition

SiO 2Walter Schumann , Gemstones of the world (2001)

Mn 8Si 6O 15(OH,Cl) 10Ulrich Henn and Claudio C.

Rock Crystal and Friedelite Chemical Formula

While comparing Rock Crystal and Friedelite 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 Rock Crystal and Friedelite chemical formula.

Chemical formula of Rock Crystal- SiO 2Walter Schumann , Gemstones of the world (2001)
Chemical formula of Friedelite- Mn 8Si 6O 15(OH,Cl) 10Ulrich Henn and Claudio C.

Compare Blue Gemstones

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Rock Crystal Vs Scorzalite

Rock Crystal Vs Sardonyx

Rock Crystal and Friedelite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Rock Crystal and Friedelite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Rock Crystal and Friedelite Optical Properties during the identification of gemstone. Specific gravity of Rock Crystal is 3.06-3.19 whereas that of Friedelite is 3.06-3.19.