Painite and Rosasite Optical Properties

Painite

Rosasite

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1 Optical Properties

1.1 Luster

Not Available

Silky, Vitreous

1.2 Pleochroism

Strong dichroism: yellow-brown red to brown-violet (pinkish samples: nearly colorless pale orangy-pink)Herve Nicolas Lazzarelli

Strong: X = pale emerald green or colourless; Y = dark emerald green or pale blue; Z = dark emerald green or pale blue

1.3 Dispersion

NANA

0.007 1

1.4 Transparency

Gems

Not Available

1.5 Refractive Index

1.787-1.8161.672-1.688

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Not Available

monoclinic

1.8 Birefringence

0.0290.139-0.143

0 0.296

1.9 Clarity

Gems

Not Available

Painite and Rosasite Optic Character

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

Similar to their colors, Painite and Rosasite 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, Painite is Gems while Painite is Gems in appearance.