Chalcedony and Gedrite Physical Properties

Chalcedony

Gedrite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Soluble

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.55-2.703.15-3.259

1 7.18

1.5 Fracture

Uneven, Splintery, Conchoidal, Uneven, Splintery, Conchoidal, UnevenWalter Schumann

Not Available

1.6 Cleavage

Absent

Gedrite Magnesiogedrite , Comments: Dark gray cleavage fragment of magnesiogedrite (gedrite). , Location: Bamble, Telemark, Norway. , Scale: See Image.

1.7 Mohs Hardness

6.5-75.5-6

2 10

1.8 Chemical Composition

SiO₂

(Mg,Fe2+ ) 2[(Mg,Fe2+ ) 3Al 2](Si 6Al 2)O 22(OH) 2Anthony et al , Handbook of mineralogy (2001)

Chalcedony and Gedrite Chemical Formula

While comparing Chalcedony and Gedrite 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 Chalcedony and Gedrite chemical formula.

Chemical formula of Chalcedony- SiO₂
Chemical formula of Gedrite- (Mg,Fe2+ ) 2[(Mg,Fe2+ ) 3Al 2](Si 6Al 2)O 22(OH) 2Anthony et al , Handbook of mineralogy (2001)

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Chalcedony and Gedrite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Chalcedony and Gedrite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Chalcedony and Gedrite Optical Properties during the identification of gemstone. Specific gravity of Chalcedony is 3.15-3.259 whereas that of Gedrite is 3.15-3.259.