Citrine and Zoisite Optical Properties

Citrine

Zoisite

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1 Optical Properties

1.1 Luster

Vitreous

1.2 Pleochroism

Natural: weak; yellow light yellow.

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

1.3 Dispersion

0.010.02

0.007 1

1.4 Transparency

Transparent

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

1.5 Refractive Index

1.544-1.5531.685-1.707

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Trigonal

Orthorhombic

1.8 Birefringence

0.0090.006-0.018

0 0.296

1.9 Clarity

Transparent

Citrine and Zoisite Optic Character

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

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