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Povondraite
Povondraite

Alexandrite
Alexandrite



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Povondraite
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Alexandrite

Povondraite and Alexandrite Optical Properties

1 Optical Properties
1.1 Luster
Resinous
Vitreous
1.2 Pleochroism
Strong: yellow-brown
Not Available
1.3 Dispersion
Albite Optical ..
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Fluorite Optical Properties
1.4 Transparency
Translucent
Transparent, Transparent to nearly opaque
1.5 Refractive Index
Not Available
1.739-1.770
1.6 Optic Character
Not Available
Biaxial/+
1.7 Crystal System
Not Available
Orthorhombic
1.8 Birefringence
Not Available
0.007-0.010
1.9 Clarity
Translucent
Transparent

Povondraite and Alexandrite Optic Character

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

Povondraite and Alexandrite Transparency

Similar to their colors, Povondraite 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, Povondraite is Translucent while Povondraite is Translucent in appearance.