Riesling Beryl and Dravite Optical Properties

Riesling Beryl

Dravite

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1 Optical Properties

1.1 Luster

Not Available

Vitreous

1.2 Pleochroism

Strongly dichroicMartin H. Read

Very strong: pale yellow colorless

1.3 Dispersion

0.010.02

0.007 1

1.4 Transparency

Not Available

Transparent

1.5 Refractive Index

1.591.614-1.666

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Not Available

Trigonal Ditrigonal Pyramidal H-M Symbol (3m) Space Group: R 3m

1.8 Birefringence

0.004-0.0100.014-0.032

0 0.296

1.9 Clarity

Not Available

Transparent

Riesling Beryl and Dravite Optic Character

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

Similar to their colors, Riesling Beryl and Dravite 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, Riesling Beryl is Not Available while Riesling Beryl is Not Available in appearance.