Phosphosiderite and Crocoite Optical Properties

Phosphosiderite

Crocoite

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1 Optical Properties

1.1 Luster

Vitreous

Adamantine

1.2 Pleochroism

Pale rose-red carmine-red colorlessAnthony et al

Distinctly trichroic

1.3 Dispersion

NANA

0.007 1

1.4 Transparency

Transparent

1.5 Refractive Index

1.692-1.7392.31-2.66

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Not Available

Monoclinic Prismatic H-M Symbol (2/m) Space Group: P 21/n

1.8 Birefringence

0.240Not Available

0 0.296

1.9 Clarity

Transparent

Phosphosiderite and Crocoite Optic Character

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

Similar to their colors, Phosphosiderite and Crocoite 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, Phosphosiderite is Transparent while Phosphosiderite is Transparent in appearance.