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Aragonite
Aragonite

Erythrite
Erythrite



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Aragonite
X
Erythrite

Aragonite and Erythrite Optical Properties

Optical Properties

Luster

Vitreous, Resinous
Subadamantine, Pearly

Pleochroism

StrongArthur Thomas
Visible: X = pale pinkish to pale rose; Y = pale violet to pale violet-rose; Z = deep red

Dispersion

0.170.03
0.005 1
👆🏻

Transparency

Transparent, Translucent
-

Refractive Index

1.525-1.6861.626-1.629
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Orthorhombic
monoclinic

Birefringence

0.155-9999
0 0.296
👆🏻

Clarity

Transparent
-

Aragonite and Erythrite Optic Character

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

Aragonite and Erythrite Transparency

Similar to their colors, Aragonite and Erythrite 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, Aragonite is Transparent and Translucent while Aragonite is Transparent and Translucent in appearance.