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Amber
Amber

Dumortierite
Dumortierite



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X
Amber
X
Dumortierite

Amber and Dumortierite Optical Properties

Optical Properties

Luster

Resinous
Vitreous

Pleochroism

-
Strong; X = deep blue or violet; Y = yellow to red-violet or nearly colorless; Z = colorless or very pale blue

Dispersion

0.010.01
0.005 1
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Transparency

Transparent, Translucent
Translucent, Translucent to opaque

Refractive Index

1.539-1.5451.669-1.723
1 3.25
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Optic Character

-
-

Crystal System

-
Orthorhombic

Birefringence

-99990.011-0.037
0 0.296
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Clarity

Transparent
Translucent

Amber and Dumortierite Optic Character

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

Amber and Dumortierite Transparency

Similar to their colors, Amber and Dumortierite 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, Amber is Transparent and Translucent while Amber is Transparent and Translucent in appearance.