Crocoite and Corundum Optical Properties

Crocoite

Corundum

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1 Optical Properties

1.1 Luster

Adamantine

Adamantine, Vitreous

1.2 Pleochroism

Distinctly trichroic

None

1.3 Dispersion

NA0.02

0.007 1

1.4 Transparency

Transparent

Transparent, Translucent

1.5 Refractive Index

2.31-2.661.758-1.780

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

Trigonal

1.8 Birefringence

Not Available0.007-0.010

0 0.296

1.9 Clarity

Transparent

Gemmological Tables (2004) More from other references

Crocoite and Corundum Optic Character

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

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Crocoite and Corundum Transparency

Similar to their colors, Crocoite and Corundum 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.