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Afghanite
Afghanite
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Umbalite
Umbalite
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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
2.55-2.65
Conchoidal
Perfect {10 1 0}
5.5-6
(Na,Ca,K) 8(Si,Al) 12O 24(SO 4,Cl,CO 3) 3(H 2O)Arthur Thomas , Gemstones (2009)
 
-
-
-
3.62-4.33
Uneven
Indiscernible
7-7.5
Mg 3Al 2(SiO 4) 3 -Mn2+3Al 2(SiO 4) 3Gemdat.org , Management Team (2012)

Compare Blue Gemstones

Blue Gemstones

Kainite
Kainite
Lawsonite
Lawsonite
Plumbogummite
Plumbogummite
Umbalite
Vishnevite
Umbalite Vs Vishnevite
Umbalite
Cavansite
Umbalite Vs Cavansite
Umbalite
Cordierite
Umbalite Vs Cordierite

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