Unakite and Euclase Optical Properties

Unakite

Euclase

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1 Optical Properties

1.1 Luster

Not Available

Vitreous

1.2 Pleochroism

Not Available

Weak: colorless-(greenish) yellow

1.3 Dispersion

NA0.02

0.007 1

1.4 Transparency

Gemstones of the world (2001)

Gemmological Tables (2004) More from other references

1.5 Refractive Index

1.5251.650-1.677

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

Not Available0.019-0.025

0 0.296

1.9 Clarity

Gemstones of the world (2001)

TransparentUlrich Henn and Claudio C. Milisenda

Unakite and Euclase Optic Character

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

Similar to their colors, Unakite 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, Unakite is Gemstones of the world (2001) while Unakite is Gemstones of the world (2001) in appearance.