Quartz and Amblygonite Optical Properties

Quartz

Amblygonite

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Optical Properties

Luster

Vitreous

Vitreous, Pearly

Pleochroism

None

weak to none

Dispersion

0.010.01

0.005 1

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Transparency

Transparent, Translucent, Transparent to translucent

Refractive Index

1.544-1.5531.578-1.646

1 3.25

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Optic Character

Biaxial/+

Crystal System

Trigonal

Triclinic

Birefringence

0.0090.020-0.030

0 0.296

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Clarity

Opaque

TransparentUlrich Henn and Claudio C. Milisenda

Quartz and Amblygonite Optic Character

Quartz and Amblygonite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Quartz and Amblygonite 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 Quartz and Amblygonite 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. Amblygonite has Biaxial/+ character.

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Quartz and Amblygonite Transparency

Similar to their colors, Quartz and Amblygonite 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, Quartz is Transparent, Translucent and Transparent to translucent while Quartz is Transparent, Translucent and Transparent to translucent in appearance.