Home
Gemstones


Black Opal and Ludlamite Physical Properties


Ludlamite and Black Opal Physical Properties


Physical Properties

Tenacity
Not Available   
Not Available   

Solubility
Not Available   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
1.97-2.22   
3.1-3.2   

Fracture
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)   
UnevenArthur Thomas, Gemstones (2009), UnevenArthur Thomas, Gemstones (2009)   

Cleavage
Not Available   
Vitreous, pearly on cleavage   

Mohs Hardness
6-6.5   
3-4   

Chemical Composition
SiO 2 + H 2OUlrich Henn and Claudio C.   
(Fe2+ ,Mg,Mn2+ ) 3(PO 4) 2 · 4H 2OMichael O’Donoghue , Gems, Sixth Edition (2006) More from other references   

Optical Properties >>
<< Astrology

Black Opal and Ludlamite Chemical Formula

While comparing Black Opal and Ludlamite 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 Black Opal and Ludlamite chemical formula.

Compare Blue Gemstones

Black Opal and Ludlamite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Black Opal and Ludlamite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Black Opal and Ludlamite Optical Properties during the identification of gemstone. Specific gravity of Black Opal is 3.1-3.2 whereas that of Ludlamite is 3.1-3.2.

Blue Gemstones

Blue Gemstones


Compare Blue Gemstones