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Ammonite
Ammonite

Sunstone
Sunstone



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Ammonite
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Sunstone

Ammonite and Sunstone Optical Properties

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Optical Properties

Luster

-
Vitreous

Pleochroism

-
Weak or absentWalter Schumann

Dispersion

0.010.01
0.005 1
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Transparency

-
Transparent, Translucent, Transparent to translucent

Refractive Index

-99991.53-1.55
1 3.25
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Optic Character

-
-

Crystal System

Trigonal
Triclinic

Birefringence

-99990.007-0.010
0 0.296
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Clarity

-
Transparent to translucent

Ammonite and Sunstone Optic Character

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

Ammonite and Sunstone Transparency

Similar to their colors, Ammonite and Sunstone 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, Ammonite is while Ammonite is in appearance.