Turquoise and Euclase Optical Properties

Turquoise

Euclase

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1 Optical Properties

1.1 Luster

Waxy

Vitreous

1.2 Pleochroism

Weak

Weak: colorless-(greenish) yellow

1.3 Dispersion

None0.02

0.007 1

1.4 Transparency

Translucent, Opaque

Gemmological Tables (2004) More from other references

1.5 Refractive Index

1.610-1.6501.650-1.677

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Triclinic

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

1.8 Birefringence

0.0400.019-0.025

0 0.296

1.9 Clarity

Translucent

TransparentUlrich Henn and Claudio C. Milisenda

Turquoise and Euclase Optic Character

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

Similar to their colors, Turquoise 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, Turquoise is Opaque and Translucent while Turquoise is Opaque and Translucent in appearance.