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Sapphire
Sapphire

Chrysoberyl
Chrysoberyl



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Sapphire
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Chrysoberyl

Sapphire and Chrysoberyl Optical Properties

1 Optical Properties
1.1 Luster
Vitreous, Adamantine, Vitreous, Adamantine
Vitreous
1.2 Pleochroism
Strong
X = red; Y = yellow-orange; Z = emerald-green
1.3 Dispersion
Albite Optical ..
0.02
Rank: 21 (Overall)
0.02
Rank: 24 (Overall)
Fluorite Optical Properties
1.4 Transparency
Transparent, Translucent, Transparent to opaque
Transparent, Translucent, Transparent to translucent
1.5 Refractive Index
1.762-1.788
1.746-1.763
1.6 Optic Character
Not Available
Biaxial/+
1.7 Crystal System
Trigonal
Orthorhombic
1.8 Birefringence
0.008-0.009
0.007-0.013
1.9 Clarity
Transparent
Transparent

Sapphire and Chrysoberyl Optic Character

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

Sapphire and Chrysoberyl Transparency

Similar to their colors, Sapphire and Chrysoberyl 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, Sapphire is Translucent, Transparent and Transparent to opaque while Sapphire is Translucent, Transparent and Transparent to opaque in appearance.