Barite and Zoisite Optical Properties

Barite

Zoisite

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1 Optical Properties

1.1 Luster

Vitreous

1.2 Pleochroism

colorless.

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

Orthorhombic

1.8 Birefringence

Not Available0.006-0.018

0 0.296

1.9 Clarity

Not Available

Transparent

Barite and Zoisite Optic Character

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

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Barite and Zoisite Transparency

Similar to their colors, Barite 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, Barite is Not Available while Barite is Not Available in appearance.