Sunstone and Zincite Optical Properties

Sunstone

Zincite

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1 Optical Properties

1.1 Luster

Vitreous

Subadamantine, Resinous

1.2 Pleochroism

Weak or absentWalter Schumann

Very weak

1.3 Dispersion

NoneNA

0.007 1

1.4 Transparency

Transparent, Translucent, Transparent to translucent

TransparentRobert C. Kammerling, The Journal of Gemmology (1995) More from other references

1.5 Refractive Index

1.53-1.552.013-2.029

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Triclinic

Hexagonal

1.8 Birefringence

0.007-0.0100.016

0 0.296

1.9 Clarity

Transparent to translucent

TransparentRobert C. Kammerling

Sunstone and Zincite Optic Character

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

Similar to their colors, Sunstone and Zincite 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, Sunstone is Translucent, Transparent and Transparent to translucent while Sunstone is Translucent, Transparent and Transparent to translucent in appearance.