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Ludlamite
Ludlamite

Kashmir sapphire
Kashmir sapphire



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Ludlamite
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Kashmir sapphire

Ludlamite and Kashmir sapphire Optical Properties

Optical Properties

Luster

Vitreous, Pearly
-

Pleochroism

-
-

Dispersion

0.020.02
0.005 1
👆🏻

Transparency

-
-

Refractive Index

1.653-1.693-9999
1 3.25
👆🏻

Optic Character

-
-

Crystal System

monoclinic
-

Birefringence

0.038-0.044-9999
0 0.296
👆🏻

Clarity

TransparentUlrich Henn and Claudio C. Milisenda
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Ludlamite and Kashmir sapphire Optic Character

Ludlamite and Kashmir sapphire optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Ludlamite and Kashmir sapphire 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 Ludlamite and Kashmir sapphire 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.

Ludlamite and Kashmir sapphire Transparency

Similar to their colors, Ludlamite and Kashmir sapphire 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, Ludlamite is while Ludlamite is in appearance.