Rhodochrosite and Amblygonite Optical Properties

Rhodochrosite

Amblygonite

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1 Optical Properties

1.1 Luster

Vitreous

Vitreous, Pearly

1.2 Pleochroism

Weak

weak to none

1.3 Dispersion

0.020.01

0.007 1

1.4 Transparency

Transparent, Opaque, Transparent to nearly opaque

Gemmological Tables (2004) More from other references

1.5 Refractive Index

1.601.578-1.646

1 3.25

1.6 Optic Character

Not Available

Biaxial/+

1.7 Crystal System

Trigonal

Triclinic

1.8 Birefringence

0.208-0.2200.020-0.030

0 0.296

1.9 Clarity

Transparent to nearly opaque

TransparentUlrich Henn and Claudio C. Milisenda

Rhodochrosite and Amblygonite Optic Character

Rhodochrosite and Amblygonite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Rhodochrosite and Amblygonite 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 Amblygonite 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. Amblygonite has Biaxial/+ character.

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Rhodochrosite and Amblygonite Transparency

Similar to their colors, Rhodochrosite and Amblygonite 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.