Crocoite and Spinel Optical Properties

Crocoite

Spinel

Add ⊕

1 Optical Properties

1.1 Luster

Adamantine

Vitreous

1.2 Pleochroism

Distinctly trichroic

Absent

1.3 Dispersion

NA0.02

0.007 1

1.4 Transparency

Transparent

Transparent, Translucent, Transparent to translucent

1.5 Refractive Index

2.31-2.661.73

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

Isometric

1.8 Birefringence

Not AvailableNot Available

0 0.296

1.9 Clarity

Transparent

TransparentUlrich Henn and Claudio C. Milisenda

Crocoite and Spinel Optic Character

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

Crocoite Vs Fire Opal

Crocoite Vs Elbaite

Crocoite and Spinel Transparency

Similar to their colors, Crocoite and Spinel 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.