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Siderite
Siderite

Hureaulite
Hureaulite



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Siderite
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Hureaulite

Siderite and Hureaulite Optical Properties

Optical Properties

Luster

Pearly
Vitreous, Greasy

Pleochroism

-
Colorless yellow to pale rose reddish yellow to reddish brown.Anthony et al

Dispersion

0.040.02
0.005 1
👆🏻

Transparency

Transparent, Translucent
Transparent

Refractive Index

1.633-1.8751.647-1.667
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Trigonal
Monoclinic Prismatic H-M Symbol (2/m) Space Group: C 2/c

Birefringence

0.2420.012
0 0.296
👆🏻

Clarity

Transparent
Transparent

Siderite and Hureaulite Optic Character

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

Siderite and Hureaulite Transparency

Similar to their colors, Siderite and Hureaulite 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, Siderite is Transparent and Translucent while Siderite is Transparent and Translucent in appearance.