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Clinochlore and Danburite Optical Properties


Danburite and Clinochlore Optical Properties


Optical Properties

Luster
Pearly, Greasy   
Vitreous, Greasy   

Pleochroism
Distinct: light yellow-green to light bluE   
Weak: pale yellow yellow   

Dispersion
Not Available   
0.02   
22

Transparency
Transparent   
Gemmological Tables (2004) More from other references   

Refractive Index
1.571-1.597   
1.627-1.639   

Optic Character
Biaxial/+   
Biaxial/+   

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

Birefringence
Not Available   
0.006   

Clarity
Transparent   
TransparentUlrich Henn and Claudio C. Milisenda   

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Clinochlore and Danburite Optic Character

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

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Clinochlore and Danburite Transparency

Similar to their colors, Clinochlore and Danburite 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, Clinochlore is Transparent while Clinochlore is Transparent in appearance.

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