Andalusite and Chrome-Chalcedony Optical Properties

Andalusite

Chrome-Chalcedony

Add ⊕

1 Optical Properties

1.1 Luster

Vitreous, Greasy

Waxy

1.2 Pleochroism

strongly trichroic

Not Available

1.3 Dispersion

0.02NA

0.007 1

1.4 Transparency

Transparent, Translucent

Translucent

1.5 Refractive Index

1.627-1.6501.530-1.543

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Orthorhombic

Not Available

1.8 Birefringence

0.009-0.0100.003-0.009

0 0.296

1.9 Clarity

Transparent

Translucent

Andalusite and Chrome-Chalcedony Optic Character

Andalusite and Chrome-Chalcedony optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Andalusite and Chrome-Chalcedony 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 Andalusite and Chrome-Chalcedony 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 Brown Gemstones

Andalusite Vs Augite

Andalusite Vs Baddeleyite

Andalusite Vs Baryte Barite

Andalusite and Chrome-Chalcedony Transparency

Similar to their colors, Andalusite and Chrome-Chalcedony 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, Andalusite is Transparent and Translucent while Andalusite is Transparent and Translucent in appearance.