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Blue spinel
Blue spinel

Lepidolite
Lepidolite



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X
Blue spinel
X
Lepidolite

Blue spinel and Lepidolite Optical Properties

Optical Properties

Luster

-
Vitreous, Pearly

Pleochroism

-
X = almost colorless; Y = Z = pink

Dispersion

-0.01
0.005 1
👆🏻

Transparency

-
Transparent

Refractive Index

-99991.525-1.587
1 3.25
👆🏻

Optic Character

-
-

Crystal System

-
Triclinic

Birefringence

-99990.0290-0.0380
0 0.296
👆🏻

Clarity

-
Transparent

Blue spinel and Lepidolite Optic Character

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

Similar to their colors, Blue spinel and Lepidolite 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.