Anhydrite and Catapleiite Optical Properties

Anhydrite

Catapleiite

Add ⊕

1 Optical Properties

1.1 Luster

Pearly, Greasy

Vitreous

1.2 Pleochroism

For violet varieties

Not Available

1.3 Dispersion

0.01NA

0.007 1

1.4 Transparency

Transparent

TransparentUlrich Henn and Claudio C. Milisenda, Gemmological Tables (2004)

1.5 Refractive Index

1.570-1.6141.590-1.629

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Orthorhombic

Monoclinic Prismatic H-M Symbol (2/m) Space Group: B2/b (pseudo-HEX)

1.8 Birefringence

0.042-0.0440.039

0 0.296

1.9 Clarity

Transparent

TransparentUlrich Henn and Claudio C. Milisenda

Anhydrite and Catapleiite Optic Character

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

Compare Blue Gemstones

Anhydrite Vs Azurmalachite

Anhydrite Vs Black Opal

Anhydrite Vs Beryl

Anhydrite and Catapleiite Transparency

Similar to their colors, Anhydrite and Catapleiite 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.