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Chrysoberyl and Lawsonite Optical Properties


Lawsonite and Chrysoberyl Optical Properties


Optical Properties

Luster
Vitreous   
Vitreous, Greasy   

Pleochroism
X = red; Y = yellow-orange; Z = emerald-green   
Weak   

Dispersion
0.02   
24
Not Available   

Transparency
Transparent, Translucent, Transparent to translucent   
Not Available   

Refractive Index
1.746-1.763   
1.672-1.676   

Optic Character
Biaxial/+   
Not Available   

Crystal System
Orthorhombic   
Orthorhombic   

Birefringence
0.007-0.013   
0.019-0.021   

Clarity
Transparent   
Not Available   

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Chrysoberyl and Lawsonite Optic Character

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

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Chrysoberyl and Lawsonite Transparency

Similar to their colors, Chrysoberyl and Lawsonite 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, Chrysoberyl is Translucent, Transparent and Transparent to translucent while Chrysoberyl is Translucent, Transparent and Transparent to translucent in appearance.

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