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Citrine
Citrine

Achroite
Achroite



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Citrine
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Achroite

Citrine and Achroite Optical Properties

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Optical Properties

Luster

Vitreous
-

Pleochroism

Natural: weak; yellow light yellow.
-

Dispersion

0.010.02
0.005 1
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Transparency

Transparent
Transparent, Translucent

Refractive Index

1.544-1.5531.614-1.666
1 3.25
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Optic Character

-
-

Crystal System

Trigonal
-

Birefringence

0.0090.014-0.040
0 0.296
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Clarity

Transparent
Transparent

Citrine and Achroite Optic Character

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

Citrine and Achroite Transparency

Similar to their colors, Citrine and Achroite 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.