Rhodochrosite and Thaumasite Optical Properties

Rhodochrosite

Thaumasite

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1 Optical Properties

1.1 Luster

Vitreous

Vitreous, Silky

1.2 Pleochroism

Weak

Not Available

1.3 Dispersion

0.02NA

0.007 1

1.4 Transparency

Transparent, Opaque, Transparent to nearly opaque

Gemmological Tables (2004) More from other references

1.5 Refractive Index

1.601.467-1.505

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Trigonal

Hexagonal

1.8 Birefringence

0.208-0.2200.038

0 0.296

1.9 Clarity

Transparent to nearly opaque

TransparentUlrich Henn and Claudio C. Milisenda

Rhodochrosite and Thaumasite Optic Character

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

Similar to their colors, Rhodochrosite and Thaumasite 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.