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Esperite and Dioptase Optical Properties


Dioptase and Esperite Optical Properties


Optical Properties

Luster
Vitreous   
Vitreous   

Pleochroism
colorless.   
Weak; dark emerald green   

Dispersion
Not Available   
0.04   
13

Transparency
OpaqueAnthony et al, Opaque, Transparent   
TranslucentHerve Nicolas Lazzarelli   

Refractive Index
1.760-1.774   
1.644-1.720   

Optic Character
Not Available   
Not Available   

Crystal System
monoclinic   
Trigonal   

Birefringence
0.012   
0.051-0.053   

Clarity
OpaqueAnthony et al   
TranslucentHerve Nicolas Lazzarelli   

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Esperite and Dioptase Optic Character

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

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Esperite and Dioptase Transparency

Similar to their colors, Esperite 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, Esperite is Opaque, OpaqueAnthony et al and Transparent while Esperite is Opaque, OpaqueAnthony et al and Transparent in appearance.

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