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Citrine
Citrine

Alexandrite
Alexandrite



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Citrine
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Alexandrite

Citrine and Alexandrite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous
Vitreous
1.2 Pleochroism
Natural: weak; yellow light yellow.
Not Available
1.3 Dispersion
Albite Optical ..
0.01
Rank: 27 (Overall)
Not Available
Rank: N/A (Overall)
Fluorite Optical Properties
1.4 Transparency
Transparent
Transparent, Transparent to nearly opaque
1.5 Refractive Index
1.544-1.553
1.739-1.770
1.6 Optic Character
Not Available
Biaxial/+
1.7 Crystal System
Trigonal
Orthorhombic
1.8 Birefringence
0.009
0.007-0.010
1.9 Clarity
Transparent
Transparent

Citrine and Alexandrite Optic Character

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

Citrine and Alexandrite Transparency

Similar to their colors, Citrine 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, Citrine is Transparent while Citrine is Transparent in appearance.

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