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Moonstone
Moonstone

Dioptase
Dioptase



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Moonstone
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Dioptase

Moonstone and Dioptase Optical Properties

Optical Properties

Luster

Pearly
Vitreous

Pleochroism

-
Weak; dark emerald green

Dispersion

0.010.04
0.005 1
👆🏻

Transparency

Transparent, Transparent to translucent
TranslucentHerve Nicolas Lazzarelli

Refractive Index

1.518-1.5271.644-1.720
1 3.25
👆🏻

Optic Character

-
-

Crystal System

monoclinic
Trigonal

Birefringence

0.006-0.0070.051-0.053
0 0.296
👆🏻

Clarity

Transparent
TranslucentHerve Nicolas Lazzarelli

Moonstone and Dioptase Optic Character

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

Moonstone and Dioptase Transparency

Similar to their colors, Moonstone 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, Moonstone is Transparent and Transparent to translucent while Moonstone is Transparent and Transparent to translucent in appearance.