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Titanite Sphene and Howlite Optical Properties


Howlite and Titanite Sphene Optical Properties


Optical Properties

Luster
Not Available   
Vitreous   

Pleochroism
Green stones strong trichroism: typically colorless greenish yellow brownish to yellow;   
NilArthur Thomas   

Dispersion
0.05   
9
Not Available   

Transparency
Transparent, Translucent   
Gemmological Tables (2004) More from other references   

Refractive Index
1.843-2.110   
1.583-1.608   

Optic Character
Not Available   
Not Available   

Crystal System
Not Available   
monoclinic   

Birefringence
0.100-0.192   
0.019   

Clarity
Transparent   
Gemmological Tables (2004) More from other references   

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Titanite Sphene and Howlite Optic Character

Titanite Sphene and Howlite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Titanite Sphene and Howlite Physical Properties like crystallographic symmetry, pleochroism,etc. in the crystal. Some of the optical properties are refractive index, luster, optic character, pleochroism etc. Prominent among these is Titanite Sphene and Howlite optic character. You might have noticed your gemologist rotating the gemstone while testing it. Rotating a gemstone along its optic axis helps in determining its optic character.

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Titanite Sphene and Howlite Transparency

Similar to their colors, Titanite Sphene and Howlite transparency can also be used as criteria for their primary identification. Although transparency cannot be the only criteria for gemstone identification, it can efficiently used in gemstone grading. Talking about their transparency, Titanite Sphene is Translucent and Transparent while Titanite Sphene is Translucent and Transparent in appearance.

Green Gemstones

Green Gemstones


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