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Legrandite
Legrandite

Apatite
Apatite



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Legrandite
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Apatite

Legrandite and Apatite Optical Properties

Optical Properties

Luster

Vitreous
Vitreous

Pleochroism

Colorless
Blue stones – strong

Dispersion

0.030.01
0.005 1
👆🏻

Transparency

-
-

Refractive Index

1.702-1.7401.628-1.651
1 3.25
👆🏻

Optic Character

-
-

Crystal System

monoclinic
Hexagonal

Birefringence

0.0600.002-0.008
0 0.296
👆🏻

Clarity

-
TransparentUlrich Henn and Claudio C. Milisenda

Legrandite and Apatite Optic Character

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

Legrandite and Apatite Transparency

Similar to their colors, Legrandite and Apatite 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, Legrandite is while Legrandite is in appearance.