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Moonstone
Moonstone

Siderite
Siderite



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Moonstone
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Siderite

Moonstone and Siderite Optical Properties

Optical Properties

Luster

Pearly
Pearly

Pleochroism

-
-

Dispersion

0.010.04
0.005 1
👆🏻

Transparency

Transparent, Transparent to translucent
Transparent, Translucent

Refractive Index

1.518-1.5271.633-1.875
1 3.25
👆🏻

Optic Character

-
-

Crystal System

monoclinic
Trigonal

Birefringence

0.006-0.0070.242
0 0.296
👆🏻

Clarity

Transparent
Transparent

Moonstone and Siderite Optic Character

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

Moonstone and Siderite Transparency

Similar to their colors, Moonstone and Siderite 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, Moonstone is Transparent and Transparent to translucent while Moonstone is Transparent and Transparent to translucent in appearance.