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Sugilite
Sugilite

Aventurine
Aventurine



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Sugilite
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Aventurine

Sugilite and Aventurine Optical Properties

1 Optical Properties
1.1 Luster
Vitreous
Vitreous
1.2 Pleochroism
Weak
AbsentWalter Schumann
1.3 Dispersion
NANone
Fluorite Optical Properties
0.007 1
1.4 Transparency
Translucent
Translucent, Opaque . May be translucent when backlit on the edges.
1.5 Refractive Index
1.607-1.6121.544-1.553
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Hexagonal
Trigonal
1.8 Birefringence
0.0030.007-0.010
Achroite
0 0.296
1.9 Clarity
Translucent
Translucent

Sugilite and Aventurine Optic Character

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

Similar to their colors, Sugilite and Aventurine 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.