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Hurlbutite
Hurlbutite

Aventurine
Aventurine



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Aventurine

Hurlbutite and Aventurine Optical Properties

1 Optical Properties
1.1 Luster
Vitreous
Vitreous
1.2 Pleochroism
Not Available
AbsentWalter Schumann
1.3 Dispersion
Albite Optical ..
Not Available
Rank: N/A (Overall)
None
Rank: N/A (Overall)
Fluorite Optical Properties
1.4 Transparency
Transparent
Translucent, Opaque . May be translucent when backlit on the edges.
1.5 Refractive Index
1.595-1.604
1.544-1.553
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Monoclinic Prismatic H-M Symbol (2/m) Space Group: P 21/a
Trigonal
1.8 Birefringence
0.009
0.007-0.010
1.9 Clarity
Transparent
Translucent

Hurlbutite and Aventurine Optic Character

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

Hurlbutite and Aventurine Transparency

Similar to their colors, Hurlbutite 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, Hurlbutite is Transparent while Hurlbutite is Transparent in appearance.