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Anatase
Anatase

Dioptase
Dioptase



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Anatase
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Dioptase

Anatase and Dioptase Optical Properties

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Optical Properties

Luster

Adamantine
Vitreous

Pleochroism

Weak
Weak; dark emerald green

Dispersion

0.210.04
0.005 1
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Transparency

Transparent
TranslucentHerve Nicolas Lazzarelli

Refractive Index

2.488-2.5621.644-1.720
1 3.25
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Optic Character

-
-

Crystal System

tetragonal
Trigonal

Birefringence

0.0730.051-0.053
0 0.296
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Clarity

Transparent
TranslucentHerve Nicolas Lazzarelli

Anatase and Dioptase Optic Character

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

Anatase and Dioptase Transparency

Similar to their colors, Anatase and Dioptase 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, Anatase is Transparent while Anatase is Transparent in appearance.