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Phosphophyllite
Phosphophyllite

Dioptase
Dioptase



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Phosphophyllite
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Dioptase

Phosphophyllite and Dioptase Optical Properties

Optical Properties

Luster

-
Vitreous

Pleochroism

-
Weak; dark emerald green

Dispersion

0.030.04
0.005 1
👆🏻

Transparency

-
TranslucentHerve Nicolas Lazzarelli

Refractive Index

1.595-1.6211.644-1.720
1 3.25
👆🏻

Optic Character

-
-

Crystal System

-
Trigonal

Birefringence

0.0210.051-0.053
0 0.296
👆🏻

Clarity

TransparentUlrich Henn and Claudio C. Milisenda
TranslucentHerve Nicolas Lazzarelli

Phosphophyllite and Dioptase Optic Character

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

Phosphophyllite and Dioptase Transparency

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