Manganotantalite and Erythrite Optical Properties

Manganotantalite

Erythrite

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1 Optical Properties

1.1 Luster

Not Available

Subadamantine, Pearly

1.2 Pleochroism

Sometimes strongArthur Thomas

Visible: X = pale pinkish to pale rose; Y = pale violet to pale violet-rose; Z = deep red

1.3 Dispersion

NANA

0.007 1

1.4 Transparency

TransparentWalter Schumann, Gemstones of the world (2001) More from other references

Not Available

1.5 Refractive Index

2.19-2.341.626-1.629

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Not Available

monoclinic

1.8 Birefringence

0.015Not Available

0 0.296

1.9 Clarity

TransparentWalter Schumann

Not Available

Manganotantalite and Erythrite Optic Character

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

Similar to their colors, Manganotantalite and Erythrite 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, Manganotantalite is Gemstones of the world (2001) More from other references and TransparentWalter Schumann while Manganotantalite is Gemstones of the world (2001) More from other references and TransparentWalter Schumann in appearance.