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Astrophyllite
Astrophyllite

Titanite
Titanite



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X
Astrophyllite
X
Titanite

Astrophyllite and Titanite Optical Properties

Optical Properties

Luster

Greasy, Pearly
Subadamantine, Resinous

Pleochroism

Strong: X= deep red-orange Y= orange-yellow Z= lemon-yellow
Strong: X = nearly colorless; Y = yellow to green; Z = red to yellow-orange

Dispersion

0.120.05
0.005 1
👆🏻

Transparency

Translucent
-

Refractive Index

1.678-1.7581.885-1.990
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Triclinic
monoclinic

Birefringence

0.0500.105-0.135
0 0.296
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Clarity

Translucent
-

Astrophyllite and Titanite Optic Character

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

Similar to their colors, Astrophyllite and Titanite 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.