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Datolite
Datolite

Sapphire
Sapphire



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Datolite
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Sapphire

Datolite and Sapphire Optical Properties

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Optical Properties

Luster

Vitreous
Vitreous, Adamantine

Pleochroism

-
Strong

Dispersion

0.020.02
0.005 1
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Transparency

Transparent
Transparent, Translucent, Transparent to opaque

Refractive Index

1.621-1.6751.762-1.788
1 3.25
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Optic Character

-
-

Crystal System

monoclinic
Trigonal

Birefringence

0.0440.008-0.009
0 0.296
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Clarity

Transparent
Transparent

Datolite and Sapphire Optic Character

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

Datolite and Sapphire Transparency

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