Rosasite and Phosphosiderite Optical Properties

Rosasite

Phosphosiderite

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1 Optical Properties

1.1 Luster

Silky, Vitreous

Vitreous

1.2 Pleochroism

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

Pale rose-red carmine-red colorlessAnthony et al

1.3 Dispersion

NANA

0.007 1

1.4 Transparency

Not Available

Transparent

1.5 Refractive Index

1.672-1.6881.692-1.739

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

monoclinic

Not Available

1.8 Birefringence

0.139-0.1430.240

0 0.296

1.9 Clarity

Not Available

Transparent

Rosasite and Phosphosiderite Optic Character

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

Similar to their colors, Rosasite and Phosphosiderite 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, Rosasite is Not Available while Rosasite is Not Available in appearance.