Emerald and Pyrophyllite Optical Properties

Emerald

Pyrophyllite

Add ⊕

1 Optical Properties

1.1 Luster

Vitreous

Pearly

1.2 Pleochroism

Strong dichroism: yellow green Lazzarelli

NilArthur Thomas

1.3 Dispersion

0.01NA

0.007 1

1.4 Transparency

Transparent, Translucent, Transparent to translucent

Translucent

1.5 Refractive Index

1.565-1.6021.534-1.601

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Hexagonal

Not Available

1.8 Birefringence

0.0040-0.00700.050

0 0.296

1.9 Clarity

Color grading system

Translucent

Emerald and Pyrophyllite Optic Character

Emerald and Pyrophyllite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Emerald and Pyrophyllite 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 Emerald and Pyrophyllite 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 Birthstones » More

Emerald Vs Sapphire

Emerald Vs Diamond

Emerald Vs Coral

» More

More Compare Birthstones

Emerald and Pyrophyllite Transparency

Similar to their colors, Emerald and Pyrophyllite 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, Emerald is Translucent, Transparent and Transparent to translucent while Emerald is Translucent, Transparent and Transparent to translucent in appearance.