Rhyolite and Zoisite Optical Properties

Rhyolite

Zoisite

Add ⊕

1 Optical Properties

1.1 Luster

Not Available

Vitreous

1.2 Pleochroism

Not Available

X = pale pink to red-violet; Y = nearly colorless to bright pink or deep blue; Z = pale yellow to yellow-green

1.3 Dispersion

NA0.02

0.007 1

1.4 Transparency

Not Available

Transparent, Translucent, Opaque . May be translucent in thin backlit sections.

1.5 Refractive Index

Not Available1.685-1.707

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Trigonal

Orthorhombic

1.8 Birefringence

Not Available0.006-0.018

0 0.296

1.9 Clarity

Not Available

Transparent

Rhyolite and Zoisite Optic Character

Rhyolite and Zoisite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Rhyolite and Zoisite 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 Rhyolite and Zoisite 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 Aquarius

Rhyolite Vs Labradorite

Rhyolite Vs Moldavite

Rhyolite Vs Hematite

Rhyolite and Zoisite Transparency

Similar to their colors, Rhyolite and Zoisite 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, Rhyolite is Not Available while Rhyolite is Not Available in appearance.