Onyx and Amber Optical Properties

Onyx

Amber

Add ⊕

1 Optical Properties

1.1 Luster

Vitreous

Resinous

1.2 Pleochroism

Not Available

AbsentWalter Schumann

1.3 Dispersion

NANA

0.007 1

1.4 Transparency

Translucent, Opaque, Translucent to opaque

Transparent, Translucent

1.5 Refractive Index

1.530-1.5431.539-1.545

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Trigonal

Amorphous

1.8 Birefringence

Not AvailableNot Available

0 0.296

1.9 Clarity

OpaqueHerve Nicolas Lazzarelli

Transparent

Onyx and Amber Optic Character

Onyx and Amber optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Onyx and Amber 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 Amber 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 Crystal Quartz

Onyx Vs Quartz Smoky

Onyx Vs Hawks Eye

» More

More Compare Gems for Capricorn

Onyx and Amber Transparency

Similar to their colors, Onyx and Amber 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.