Schultenite and Sugilite Optical Properties

Schultenite

Sugilite

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1 Optical Properties

1.1 Luster

Vitreous, Adamantine

Vitreous

1.2 Pleochroism

Not Available

Weak

1.3 Dispersion

NANA

0.007 1

1.4 Transparency

TransparentAnthony et al, Handbook of mineralogy (2001)

Translucent

1.5 Refractive Index

1.890-1.9761.607-1.612

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Not Available

Hexagonal

1.8 Birefringence

Not Available0.003

0 0.296

1.9 Clarity

TransparentAnthony et al

Translucent

Schultenite and Sugilite Optic Character

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

Similar to their colors, Schultenite and Sugilite 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, Schultenite is Handbook of mineralogy (2001) and TransparentAnthony et al while Schultenite is Handbook of mineralogy (2001) and TransparentAnthony et al in appearance.