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Astrophyllite
Astrophyllite

Sunstone
Sunstone



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Astrophyllite
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Sunstone

Astrophyllite and Sunstone Optical Properties

1 Optical Properties
1.1 Luster
Greasy, Pearly
Vitreous
1.2 Pleochroism
Strong: X= deep red-orange Y= orange-yellow Z= lemon-yellow
Weak or absentWalter Schumann
1.3 Dispersion
NANone
Fluorite Optical Properties
0.007 1
1.4 Transparency
Translucent
Transparent, Translucent, Transparent to translucent
1.5 Refractive Index
1.678-1.7581.53-1.55
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Triclinic
Triclinic
1.8 Birefringence
0.0500.007-0.010
Achroite
0 0.296
1.9 Clarity
Translucent
Transparent to translucent

Astrophyllite and Sunstone Optic Character

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

Similar to their colors, Astrophyllite and Sunstone 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.