Precious coral and Faustite Physical Properties

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Precious coral

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Faustite

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Precious coral

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Faustite

Precious coral

Precious coral

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

-

-

-

-9999

-

None

3.5

CaCO3

-

-

-

2.9

Conchoidal

{???} Indistinct

4.5

(Zn,Cu)Al 6(PO 4) 4(OH) 8 · 4H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)

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Precious coral

Bronzite

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Boulder Opal

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Precious coral

Bloodstone Heliotrope

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Bloodstone Heliotrope

Bloodstone Heliotrope

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Black Opal

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Binghamite

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Faustite

Pearl

Faustite Vs Pearl

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Jet

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Faustite

Coral

Faustite Vs Coral

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