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Sunstone
Sunstone

Euclase
Euclase



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Sunstone
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Euclase

Sunstone and Euclase Optical Properties

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Optical Properties

Luster

Pleochroism

Dispersion

Transparency

Refractive Index

Optic Character

Crystal System

Birefringence

Clarity

 
Vitreous
Weak or absentWalter Schumann
0.01
Transparent, Translucent, Transparent to translucent
1.53-1.55
-
Triclinic
0.007-0.010
Transparent to translucent
 
Vitreous
Weak: colorless-(greenish) yellow
0.02
-
1.650-1.677
-
Monoclinic Prismatic H-M Symbol (2/m) Space Group: P 21/a
0.019-0.025
TransparentUlrich Henn and Claudio C. Milisenda

Sunstone and Euclase Optic Character

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

Sunstone and Euclase Transparency

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