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Blue spinel
Blue spinel

Sinhalite
Sinhalite



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Blue spinel
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Sinhalite

Blue spinel and Sinhalite Optical Properties

Optical Properties

Luster

-
-

Pleochroism

-
Trichroism: green light brown dark brownHerve Nicolas Lazzarelli

Dispersion

-0.02
0.005 1
👆🏻

Transparency

-
-

Refractive Index

-99991.665-1.712
1 3.25
👆🏻

Optic Character

-
-

Crystal System

-
Orthorhombic

Birefringence

-99990.036-0.042
0 0.296
👆🏻

Clarity

-
TransparentUlrich Henn and Claudio C. Milisenda

Blue spinel and Sinhalite Optic Character

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

Similar to their colors, Blue spinel and Sinhalite 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.