Onyx and Ammolite Optical Properties

Onyx

Ammolite

Add ⊕

1 Optical Properties

1.1 Luster

Vitreous

Silky, Vitreous

1.2 Pleochroism

Not Available

None

1.3 Dispersion

NANA

0.007 1

1.4 Transparency

Translucent, Opaque, Translucent to opaque

Not Available

1.5 Refractive Index

1.530-1.5431.520-1.670

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Trigonal

1.8 Birefringence

Not Available0.135-0.145

0 0.296

1.9 Clarity

OpaqueHerve Nicolas Lazzarelli

Not Available

Onyx and Ammolite Optic Character

Onyx and Ammolite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Onyx and Ammolite 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 Onyx and Ammolite 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 Gems for Capricorn » More

Onyx Vs Quartz Smoky

Onyx Vs Hawks Eye

Onyx Vs Crystal Quartz

» More

More Compare Gems for Capricorn

Onyx and Ammolite Transparency

Similar to their colors, Onyx and Ammolite 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, Onyx is Opaque, Translucent and Translucent to opaque while Onyx is Opaque, Translucent and Translucent to opaque in appearance.