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Alabaster
Alabaster

Apatite
Apatite



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Alabaster
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Apatite

Alabaster and Apatite Optical Properties

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Optical Properties

Luster

-
Vitreous

Pleochroism

-
Blue stones – strong

Dispersion

-0.01
0.005 1
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Transparency

Translucent
-

Refractive Index

1.520-1.5301.628-1.651
1 3.25
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Optic Character

-
-

Crystal System

-
Hexagonal

Birefringence

0.0100.002-0.008
0 0.296
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Clarity

Translucent
TransparentUlrich Henn and Claudio C. Milisenda

Alabaster and Apatite Optic Character

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

Alabaster and Apatite Transparency

Similar to their colors, Alabaster 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, Alabaster is Translucent while Alabaster is Translucent in appearance.