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Chrysoberyl
Chrysoberyl

Cryolite
Cryolite



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Chrysoberyl
X
Cryolite

Chrysoberyl and Cryolite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous
Vitreous, Greasy, Pearly
1.2 Pleochroism
X = red; Y = yellow-orange; Z = emerald-green
colorless.
1.3 Dispersion
0.02NA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Transparent, Translucent, Transparent to translucent
Gemmological Tables (2004) More from other references
1.5 Refractive Index
1.746-1.7631.338-1.339
Agate Opal
1 3.25
1.6 Optic Character
Biaxial/+
Not Available
1.7 Crystal System
Orthorhombic
monoclinic
1.8 Birefringence
0.007-0.0130.001
Achroite
0 0.296
1.9 Clarity
Transparent
TransparentUlrich Henn and Claudio C. Milisenda

Chrysoberyl and Cryolite Optic Character

Chrysoberyl and Cryolite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Chrysoberyl and Cryolite 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 Cryolite 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.

Chrysoberyl and Cryolite Transparency

Similar to their colors, Chrysoberyl and Cryolite 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.