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Dravite
Dravite

Agate Opal
Agate Opal



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Dravite
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Agate Opal

Dravite and Agate Opal Optical Properties

Optical Properties

Luster

Vitreous
-

Pleochroism

Very strong: pale yellow colorless
-

Dispersion

0.020.01
0.005 1
👆🏻

Transparency

Transparent
Translucent

Refractive Index

1.614-1.6661.37-1.52
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Trigonal Ditrigonal Pyramidal H-M Symbol (3m) Space Group: R 3m
-

Birefringence

0.014-0.032-9999
0 0.296
👆🏻

Clarity

Transparent
Translucent

Dravite and Agate Opal Optic Character

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

Dravite and Agate Opal Transparency

Similar to their colors, Dravite and Agate Opal 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, Dravite is Transparent while Dravite is Transparent in appearance.