Rhodochrosite and Cassiterite Optical Properties

Rhodochrosite

Cassiterite

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1 Optical Properties

1.1 Luster

Vitreous

Adamantine, Greasy

1.2 Pleochroism

Weak

Pleochroic haloes have been observed. Dichroic in yellow

1.3 Dispersion

0.020.07

0.007 1

1.4 Transparency

Transparent, Opaque, Transparent to nearly opaque

Transparent, Translucent

1.5 Refractive Index

1.601.990-2.105

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Trigonal

tetragonal

1.8 Birefringence

0.208-0.2200.096-0.098

0 0.296

1.9 Clarity

Transparent to nearly opaque

Transparent

Rhodochrosite and Cassiterite Optic Character

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

Similar to their colors, Rhodochrosite and Cassiterite 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, Rhodochrosite is Opaque, Transparent and Transparent to nearly opaque while Rhodochrosite is Opaque, Transparent and Transparent to nearly opaque in appearance.