Kyanite and Tinzenite Physical Properties
Tenacity
Brittle
  
Not Available
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
3.53-3.65
  
3.355-3.433
  
Fracture
Splintery, Brittle, Metallic
  
Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001)
  
Cleavage
[100] perfect [010] imperfect with 79° angle between
  
{???} Good, {???} Good
  
Mohs Hardness
4-7
  
Not Available
  
Chemical Composition
Not Available
  
(Ca,Mn2+ ,Fe2+ ) 3Al 2BSi 4O 15(OH)Anthony et al , Handbook of mineralogy (2001)
  
Kyanite and Tinzenite Chemical Formula
While comparing Kyanite and Tinzenite 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 Kyanite and Tinzenite chemical formula.
>- Chemical formula of Tinzenite- (Ca,Mn2+ ,Fe2+ ) 3Al 2BSi 4O 15(OH)Anthony et al , Handbook of mineralogy (2001)
Kyanite and Tinzenite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Kyanite and Tinzenite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Kyanite and Tinzenite Optical Properties during the identification of gemstone. Specific gravity of Kyanite is 3.355-3.433 whereas that of Tinzenite is 3.355-3.433.