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Rhodolite
Rhodolite

Astrophyllite
Astrophyllite



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Rhodolite
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Astrophyllite

Rhodolite and Astrophyllite Optical Properties

Optical Properties

Luster

Greasy, Vitreous
Greasy, Pearly

Pleochroism

None
Strong: X= deep red-orange Y= orange-yellow Z= lemon-yellow

Dispersion

0.030.12
0.005 1
👆🏻

Transparency

-
Translucent

Refractive Index

1.7601.678-1.758
1 3.25
👆🏻

Optic Character

-
-

Crystal System

cubic
Triclinic

Birefringence

0.010-0.0140.050
0 0.296
👆🏻

Clarity

TransparentUlrich Henn and Claudio C. Milisenda
Translucent

Rhodolite and Astrophyllite Optic Character

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

Rhodolite and Astrophyllite Transparency

Similar to their colors, Rhodolite and Astrophyllite 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, Rhodolite is while Rhodolite is in appearance.