Quartz and Legrandite Optical Properties

Quartz

Legrandite

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1 Optical Properties

1.1 Luster

Vitreous

1.2 Pleochroism

None

Colorless

1.3 Dispersion

0.01NA

0.007 1

1.4 Transparency

Transparent, Translucent, Transparent to translucent

Gems

1.5 Refractive Index

1.544-1.5531.702-1.740

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Trigonal

monoclinic

1.8 Birefringence

0.0090.060

0 0.296

1.9 Clarity

Opaque

Gems

Quartz and Legrandite Optic Character

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

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