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Anhydrite
Anhydrite

Titanite
Titanite



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X
Anhydrite
X
Titanite

Anhydrite and Titanite Optical Properties

Optical Properties

Luster

Pearly, Greasy
Subadamantine, Resinous

Pleochroism

For violet varieties
Strong: X = nearly colorless; Y = yellow to green; Z = red to yellow-orange

Dispersion

0.010.05
0.005 1
👆🏻

Transparency

Transparent
-

Refractive Index

1.570-1.6141.885-1.990
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Orthorhombic
monoclinic

Birefringence

0.042-0.0440.105-0.135
0 0.296
👆🏻

Clarity

Transparent
-

Anhydrite and Titanite Optic Character

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

Anhydrite and Titanite Transparency

Similar to their colors, Anhydrite 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, Anhydrite is Transparent while Anhydrite is Transparent in appearance.