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Astrophyllite
Astrophyllite

Swiss blue topaz
Swiss blue topaz



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Astrophyllite
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Swiss blue topaz

Astrophyllite and Swiss blue topaz Optical Properties

1 Optical Properties
1.1 Luster
Greasy, Pearly
Not Available
1.2 Pleochroism
Strong: X= deep red-orange Y= orange-yellow Z= lemon-yellow
Not Available
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Translucent
Not Available
1.5 Refractive Index
1.678-1.758Not Available
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Triclinic
Not Available
1.8 Birefringence
0.050Not Available
Achroite
0 0.296
1.9 Clarity
Translucent
Not Available

Astrophyllite and Swiss blue topaz Optic Character

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

Similar to their colors, Astrophyllite and Swiss blue topaz 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.