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Pyrope Almandine
Pyrope Almandine

Dravite
Dravite



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Pyrope Almandine
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Dravite

Pyrope Almandine and Dravite Optical Properties

Optical Properties

Luster

-
Vitreous

Pleochroism

-
Very strong: pale yellow colorless

Dispersion

0.020.02
0.005 1
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Transparency

TransparentGemdat.org
Transparent

Refractive Index

1.73-1.771.614-1.666
1 3.25
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Optic Character

-
-

Crystal System

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Trigonal Ditrigonal Pyramidal H-M Symbol (3m) Space Group: R 3m

Birefringence

-99990.014-0.032
0 0.296
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Clarity

TransparentGemdat.org
Transparent

Pyrope Almandine and Dravite Optic Character

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

Pyrope Almandine and Dravite Transparency

Similar to their colors, Pyrope Almandine and Dravite 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, Pyrope Almandine is TransparentGemdat.org while Pyrope Almandine is TransparentGemdat.org in appearance.