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Demantoid and Clinochlore Optical Properties


Clinochlore and Demantoid Optical Properties


Optical Properties

Luster
Adamantine   
Pearly, Greasy   

Pleochroism
None   
Distinct: light yellow-green to light bluE   

Dispersion
Not Available   
Not Available   

Transparency
Gemmological Tables (2004)   
Transparent   

Refractive Index
1.880-1.890   
1.571-1.597   

Optic Character
Not Available   
Biaxial/+   

Crystal System
cubic   
Monoclinic Prismatic H-M Symbol (2/m) Space Group: C 2/m   

Birefringence
Not Available   
Not Available   

Clarity
TransparentUlrich Henn and Claudio C. Milisenda   
Transparent   

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Demantoid and Clinochlore Optic Character

Demantoid and Clinochlore optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Demantoid and Clinochlore 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 Demantoid and Clinochlore 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. Clinochlore has Biaxial/+ character.

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Demantoid and Clinochlore Transparency

Similar to their colors, Demantoid and Clinochlore 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, Demantoid is Gemmological Tables (2004) while Demantoid is Gemmological Tables (2004) in appearance.

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