Holmquistite and Rhodochrosite Optical Properties

Holmquistite

Rhodochrosite

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1 Optical Properties

1.1 Luster

Vitreous

1.2 Pleochroism

Strong in shades of violet when dark-colored.Anthony et al

Weak

1.3 Dispersion

NA0.02

0.007 1

1.4 Transparency

Transparent

Transparent, Opaque, Transparent to nearly opaque

1.5 Refractive Index

1.622-1.6661.60

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Orthorhombic Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: P nma

Trigonal

1.8 Birefringence

Not Available0.208-0.220

0 0.296

1.9 Clarity

Transparent

Transparent to nearly opaque

Holmquistite and Rhodochrosite Optic Character

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

Similar to their colors, Holmquistite 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, Holmquistite is Transparent while Holmquistite is Transparent in appearance.