Andradite and Omphacite Optical Properties

Andradite

Omphacite

Add ⊕

1 Optical Properties

1.1 Luster

Adamantine, Resinous

Vitreous

1.2 Pleochroism

Not Available

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

1.3 Dispersion

0.06NA

0.007 1

1.4 Transparency

Transparent

TranslucentAnthony et al, Handbook of mineralogy (2001)

1.5 Refractive Index

1.88-1.941.662-1.723

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

cubic

Not Available

1.8 Birefringence

0.057Not Available

0 0.296

1.9 Clarity

Transparent

TranslucentAnthony et al

Andradite and Omphacite Optic Character

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

Andradite Vs Astrophyllite

Andradite Vs Augite

Andradite Vs Aragonite

Andradite and Omphacite Transparency

Similar to their colors, Andradite 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, Andradite is Transparent while Andradite is Transparent in appearance.