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Sugilite
Sugilite

Sard
Sard



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Sugilite
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Sard

Sugilite and Sard Optical Properties

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1 Optical Properties
1.1 Luster
Vitreous
Waxy
1.2 Pleochroism
Weak
AbsentWalter Schumann
1.3 Dispersion
NANone
Fluorite Optical Properties
0.007 1
1.4 Transparency
Translucent
Translucent
1.5 Refractive Index
1.607-1.6121.535-1.539
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Hexagonal
Not Available
1.8 Birefringence
0.0030.008-0.010
Achroite
0 0.296
1.9 Clarity
Translucent
Translucent

Sugilite and Sard Optic Character

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

Sugilite and Sard Transparency

Similar to their colors, Sugilite and Sard 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, Sugilite is Translucent while Sugilite is Translucent in appearance.