Moonstone and Euclase Optical Properties

Moonstone

Euclase

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1 Optical Properties

1.1 Luster

Pearly

Vitreous

1.2 Pleochroism

AbsentWalter Schumann

Weak: colorless-(greenish) yellow

1.3 Dispersion

None0.02

0.007 1

1.4 Transparency

Transparent, Transparent to translucent

Gemmological Tables (2004) More from other references

1.5 Refractive Index

1.518-1.5271.650-1.677

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

monoclinic

Monoclinic Prismatic H-M Symbol (2/m) Space Group: P 21/a

1.8 Birefringence

0.006-0.0070.019-0.025

0 0.296

1.9 Clarity

Transparent

TransparentUlrich Henn and Claudio C. Milisenda

Moonstone and Euclase Optic Character

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

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Moonstone and Euclase Transparency

Similar to their colors, Moonstone 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, Moonstone is Transparent and Transparent to translucent while Moonstone is Transparent and Transparent to translucent in appearance.