Emerald and Gedrite Physical Properties

Emerald

Gedrite

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Physical Properties

Tenacity

Solubility

Durability

Hard

Specific Gravity

2.67-2.783.15-3.259

1 7.18

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Fracture

Uneven, ConchoidalWalter Schumann

Cleavage

Imperfect on the [0001]

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

Mohs Hardness

7.5-85.5-6

2 10

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Chemical Composition

Be₃Al₂SiO₆

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

Emerald and Gedrite Chemical Formula

While comparing Emerald 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 Emerald and Gedrite chemical formula.

Chemical formula of Emerald- Be₃Al₂SiO₆
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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Emerald and Gedrite Specific Gravity

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