Morganite and Thulite Optical Properties

Morganite

Thulite

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Optical Properties

Luster

Vitreous

Pleochroism

Distinct: pale pink bluish-pinkHerve Nicolas Lazzarelli

Present

Dispersion

0.010.02

0.005 1

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Transparency

Transparent, Translucent, Transparent to translucent

Opaque, Translucent, Opaque . May be translucent in thin backlit sections.

Refractive Index

1.573-1.6001.695

1 3.25

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Optic Character

Crystal System

Hexagonal

Orthorhombic

Birefringence

0.005-0.0090.006-0.018

0 0.296

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Clarity

Transparent to translucent

OpaqueHerve Nicolas Lazzarelli

Morganite and Thulite Optic Character

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

Similar to their colors, Morganite and Thulite 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, Morganite is Transparent, Translucent and Transparent to translucent while Morganite is Transparent, Translucent and Transparent to translucent in appearance.