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Dioptase
Dioptase

Friedelite
Friedelite



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Dioptase
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Friedelite

Dioptase and Friedelite Optical Properties

Optical Properties

Luster

Vitreous
-

Pleochroism

Weak; dark emerald green
-

Dispersion

0.040.04
0.005 1
👆🏻

Transparency

TranslucentHerve Nicolas Lazzarelli
Translucent

Refractive Index

1.644-1.7201.627-1.663
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Trigonal
Monoclinic Prismatic H-M Symbol (2/m) Space Group: C 2/m

Birefringence

0.051-0.0530.032-0.035
0 0.296
👆🏻

Clarity

TranslucentHerve Nicolas Lazzarelli
Translucent

Dioptase and Friedelite Optic Character

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

Dioptase and Friedelite Transparency

Similar to their colors, Dioptase and Friedelite 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, Dioptase is TranslucentHerve Nicolas Lazzarelli while Dioptase is TranslucentHerve Nicolas Lazzarelli in appearance.