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Chlorapatite
Chlorapatite

Mellite
Mellite



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Chlorapatite
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Mellite

Chlorapatite and Mellite Optical Properties

Optical Properties

Luster

Pleochroism

Dispersion

Transparency

Refractive Index

Optic Character

Crystal System

Birefringence

Clarity

 
-
Weak to moderate; in pale colors.
0.03
Transparent
1.665-1.667
-
-
-9999
Transparent
 
Vitreous
Weak: yellowish brown yellowAnthony et al
0.01
-
1.509-1.541
-
-
0.030
TransparentUlrich Henn and Claudio C. Milisenda

Chlorapatite and Mellite Optic Character

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

Chlorapatite and Mellite Transparency

Similar to their colors, Chlorapatite and Mellite 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, Chlorapatite is while Chlorapatite is in appearance.