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Sylvite
Sylvite

Dioptase
Dioptase



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Sylvite
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Dioptase

Sylvite and Dioptase Optical Properties

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Optical Properties

Luster

Vitreous
Vitreous

Pleochroism

Visible in colored crystals
Weak; dark emerald green

Dispersion

0.010.04
0.005 1
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Transparency

-
TranslucentHerve Nicolas Lazzarelli

Refractive Index

1.49031.644-1.720
1 3.25
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Optic Character

-
-

Crystal System

Isometric
Trigonal

Birefringence

-99990.051-0.053
0 0.296
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Clarity

-
TranslucentHerve Nicolas Lazzarelli

Sylvite and Dioptase Optic Character

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

Sylvite and Dioptase Transparency

Similar to their colors, Sylvite 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, Sylvite is while Sylvite is in appearance.