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Chrysoprase
Chrysoprase
☒

Piemontite
Piemontite
☒



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Chrysoprase
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Piemontite
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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
2.58-2.64
-
None
6.5-7
SiO2 (with a high level of nickel impurities )
 
Brittle
-
-
-9999
Uneven, Splintery
[001] good, [100] distinct
6-6.5
Ca2Al3(SiO4)(Si2O7)O(OH)

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Rose Quartz
Rose Quartz
Sapphire
Sapphire
Iolite
Iolite

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Piemontite
Jade
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