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Astrophyllite
Astrophyllite

Pyrope
Pyrope



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Astrophyllite
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Pyrope

Astrophyllite and Pyrope Optical Properties

1 Optical Properties
1.1 Luster
Greasy, Pearly
Greasy, Vitreous
1.2 Pleochroism
Strong: X= deep red-orange Y= orange-yellow Z= lemon-yellow
None
1.3 Dispersion
NA0.02
Fluorite Optical Properties
0.007 1
1.4 Transparency
Translucent
Gemmological Tables (2004) More from other references
1.5 Refractive Index
1.678-1.7581.720-1.756
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Triclinic
cubic
1.8 Birefringence
0.050Not Available
Achroite
0 0.296
1.9 Clarity
Translucent
TransparentUlrich Henn and Claudio C. Milisenda

Astrophyllite and Pyrope Optic Character

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

Similar to their colors, Astrophyllite and Pyrope 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.