Crocoite and Andalusite Optical Properties

Crocoite

Andalusite

Add ⊕

1 Optical Properties

1.1 Luster

Adamantine

Vitreous, Greasy

1.2 Pleochroism

Distinctly trichroic

strongly trichroic

1.3 Dispersion

NA0.02

0.007 1

1.4 Transparency

Transparent

Transparent, Translucent

1.5 Refractive Index

2.31-2.661.627-1.650

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Monoclinic Prismatic H-M Symbol (2/m) Space Group: P 21/n

Orthorhombic

1.8 Birefringence

Not Available0.009-0.010

0 0.296

1.9 Clarity

Transparent

Crocoite and Andalusite Optic Character

Crocoite and Andalusite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Crocoite and Andalusite 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 Crocoite and Andalusite 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 Red Gemstones

Crocoite Vs Fire Opal

Crocoite Vs Fluorite

Crocoite Vs Elbaite

Crocoite and Andalusite Transparency

Similar to their colors, Crocoite and Andalusite 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, Crocoite is Transparent while Crocoite is Transparent in appearance.