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Alexandrite
Alexandrite

Alexandrite
Alexandrite



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Alexandrite
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Alexandrite

Alexandrite and Alexandrite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous
Vitreous
1.2 Pleochroism
Not Available
Not Available
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Transparent, Transparent to nearly opaque
Transparent, Transparent to nearly opaque
1.5 Refractive Index
1.739-1.7701.739-1.770
Agate Opal
1 3.25
1.6 Optic Character
Biaxial/+
Biaxial/+
1.7 Crystal System
Orthorhombic
Orthorhombic
1.8 Birefringence
0.007-0.0100.007-0.010
Achroite
0 0.296
1.9 Clarity
Transparent
Transparent

Alexandrite and Alexandrite Optic Character

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

Alexandrite and Alexandrite Transparency

Similar to their colors, Alexandrite and Alexandrite 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, Alexandrite is Transparent and Transparent to nearly opaque while Alexandrite is Transparent and Transparent to nearly opaque in appearance.