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Riebeckite
Riebeckite

Adamite
Adamite



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X
Riebeckite
X
Adamite

Riebeckite and Adamite Optical Properties

Optical Properties

Luster

Vitreous, Silky
Vitreous

Pleochroism

X = blue
-

Dispersion

0.020.06
0.005 1
👆🏻

Transparency

-
Transparent

Refractive Index

1.680-1.6981.708-1.722
1 3.25
👆🏻

Optic Character

-
Biaxial/+

Crystal System

monoclinic
Orthorhombic

Birefringence

0.005-0.0080.031-0.050
0 0.296
👆🏻

Clarity

-
Transparent

Riebeckite and Adamite Optic Character

Riebeckite and Adamite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Riebeckite and Adamite 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 Riebeckite and Adamite 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. Adamite has Biaxial/+ character.

Riebeckite and Adamite Transparency

Similar to their colors, Riebeckite and Adamite 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, Riebeckite is while Riebeckite is in appearance.