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Apache Tear
Apache Tear

Coral
Coral



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Apache Tear
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Coral

Apache Tear and Coral Optical Properties

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Optical Properties

Luster

-
-

Pleochroism

-
-

Dispersion

0.010.03
0.005 1
👆🏻

Transparency

-
Translucent

Refractive Index

-99991.486-1.658
1 3.25
👆🏻

Optic Character

-
-

Crystal System

-
Trigonal

Birefringence

-99990.160-0.172
0 0.296
👆🏻

Clarity

-
Translucent

Apache Tear and Coral Optic Character

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

Apache Tear and Coral Transparency

Similar to their colors, Apache Tear and Coral 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, Apache Tear is while Apache Tear is in appearance.