Franklinite and Rhodochrosite Optical Properties

Franklinite

Rhodochrosite

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1 Optical Properties

1.1 Luster

Not Available

Vitreous

1.2 Pleochroism

Not Available

Weak

1.3 Dispersion

NA0.02

0.007 1

1.4 Transparency

Translucent

Transparent, Opaque, Transparent to nearly opaque

1.5 Refractive Index

Not Available1.60

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Isometric Hexoctahedral H-M Symbol (4/m 3 2/m) Space Group: F d3m

Trigonal

1.8 Birefringence

Not Available0.208-0.220

0 0.296

1.9 Clarity

Translucent

Transparent to nearly opaque

Franklinite and Rhodochrosite Optic Character

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

Similar to their colors, Franklinite 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, Franklinite is Translucent while Franklinite is Translucent in appearance.