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Astrophyllite
Astrophyllite

Pyrope Almandine
Pyrope Almandine



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Astrophyllite
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Pyrope Almandine

Astrophyllite and Pyrope Almandine Optical Properties

Optical Properties

Luster

Greasy, Pearly
-

Pleochroism

Strong: X= deep red-orange Y= orange-yellow Z= lemon-yellow
-

Dispersion

0.120.02
0.005 1
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Transparency

Translucent
TransparentGemdat.org

Refractive Index

1.678-1.7581.73-1.77
1 3.25
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Optic Character

-
-

Crystal System

Triclinic
-

Birefringence

0.050-9999
0 0.296
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Clarity

Translucent
TransparentGemdat.org

Astrophyllite and Pyrope Almandine Optic Character

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

Astrophyllite and Pyrope Almandine Transparency

Similar to their colors, Astrophyllite and Pyrope Almandine 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, Astrophyllite is Translucent while Astrophyllite is Translucent in appearance.