Dravite and Rhodochrosite Optical Properties

Dravite

Rhodochrosite

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1 Optical Properties

1.1 Luster

Vitreous

1.2 Pleochroism

Very strong: pale yellow colorless

Weak

1.3 Dispersion

0.020.02

0.007 1

1.4 Transparency

Transparent

Transparent, Opaque, Transparent to nearly opaque

1.5 Refractive Index

1.614-1.6661.60

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

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

Trigonal

1.8 Birefringence

0.014-0.0320.208-0.220

0 0.296

1.9 Clarity

Transparent

Transparent to nearly opaque

Dravite and Rhodochrosite Optic Character

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

Similar to their colors, Dravite and Rhodochrosite 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, Dravite is Transparent while Dravite is Transparent in appearance.