Corundum and Omphacite Optical Properties

Corundum

Omphacite

Add ⊕

1 Optical Properties

1.1 Luster

Adamantine, Vitreous

Vitreous

1.2 Pleochroism

None

Weak: colorless -- very pale green -- very pale green

1.3 Dispersion

0.02NA

0.007 1

1.4 Transparency

Transparent, Translucent

TranslucentAnthony et al, Handbook of mineralogy (2001)

1.5 Refractive Index

1.758-1.7801.662-1.723

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Trigonal

Not Available

1.8 Birefringence

0.007-0.010Not Available

0 0.296

1.9 Clarity

Gemmological Tables (2004) More from other references

TranslucentAnthony et al

Corundum and Omphacite Optic Character

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

Corundum Vs Garnet

Corundum Vs Hexagonite

Corundum Vs Hackmanite

Corundum and Omphacite Transparency

Similar to their colors, Corundum and Omphacite 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, Corundum is Translucent and Transparent while Corundum is Translucent and Transparent in appearance.