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Andradite
Andradite

Black Opal
Black Opal



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Andradite
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Black Opal

Andradite and Black Opal Optical Properties

1 Optical Properties
1.1 Luster
Adamantine, Resinous
Not Available
1.2 Pleochroism
Not Available
AbsentWalter Schumann
1.3 Dispersion
0.06None
Fluorite Optical Properties
0.007 1
1.4 Transparency
Transparent
Transparent, Translucent
1.5 Refractive Index
1.88-1.941.370-1.470
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
cubic
Not Available
1.8 Birefringence
0.057Not Available
Achroite
0 0.296
1.9 Clarity
Transparent
Transparent

Andradite and Black Opal Optic Character

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

Andradite and Black Opal Transparency

Similar to their colors, Andradite and Black 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, Andradite is Transparent while Andradite is Transparent in appearance.