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Blue spinel
Blue spinel

Zoisite
Zoisite



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X
Blue spinel
X
Zoisite

Blue spinel and Zoisite Optical Properties

Optical Properties

Luster

-
Vitreous

Pleochroism

-
X = pale pink to red-violet; Y = nearly colorless to bright pink or deep blue; Z = pale yellow to yellow-green

Dispersion

-0.02
0.005 1
👆🏻

Transparency

-
Transparent, Translucent, Opaque . May be translucent in thin backlit sections.

Refractive Index

-99991.685-1.707
1 3.25
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Optic Character

-
-

Crystal System

-
Orthorhombic

Birefringence

-99990.006-0.018
0 0.296
👆🏻

Clarity

-
Transparent

Blue spinel and Zoisite Optic Character

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

Blue spinel and Zoisite Transparency

Similar to their colors, Blue spinel and Zoisite 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, Blue spinel is while Blue spinel is in appearance.