Rhodochrosite and Grandidierite Optical Properties

Rhodochrosite

Grandidierite

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1 Optical Properties

1.1 Luster

Vitreous

Vitreous, Pearly

1.2 Pleochroism

Weak

visible

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

1.601.578-1.639

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Trigonal

Orthorhombic

1.8 Birefringence

0.208-0.2200.037-0.039

0 0.296

1.9 Clarity

Transparent to nearly opaque

Gemmological Tables (2004) More from other references

Rhodochrosite and Grandidierite Optic Character

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

Similar to their colors, Rhodochrosite and Grandidierite 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.