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Astrophyllite
Astrophyllite

Rhodolite
Rhodolite



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Astrophyllite
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Rhodolite

Astrophyllite and Rhodolite 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
NANone
Fluorite Optical Properties
0.007 1
1.4 Transparency
Translucent
Gemmological Tables (2004)
1.5 Refractive Index
1.678-1.7581.760
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Triclinic
cubic
1.8 Birefringence
0.0500.010-0.014
Achroite
0 0.296
1.9 Clarity
Translucent
TransparentUlrich Henn and Claudio C. Milisenda

Astrophyllite and Rhodolite Optic Character

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

Similar to their colors, Astrophyllite and Rhodolite 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.