Home
 Gemstones


Common Opal
Piemontite
Piemontite and Common Opal Physical Properties


Physical Properties
Tenacity
-  
Brittle  
Solubility
-  
-  
Durability
-  
-  
Specific Gravity
1.98-2.50  
-9999  
Fracture
Conchoidal  
Uneven, Splintery  
Cleavage
None  
[001] good, [100] distinct  
Mohs Hardness
5.5-6.5  
6-6.5  
Chemical Composition
SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001)  
Ca2Al3(SiO4)(Si2O7)O(OH)  
Optical Properties >>
<< Astrology

Compare Blue Gemstones

Blue Gemstones

Blue Gemstones

Compare Blue Gemstones

Home | About | Contact | Disclaimer | Terms of use
© A softusvista inc. venture!