Aventurine and Cassiterite Optical Properties

Aventurine

Cassiterite

Add ⊕

1 Optical Properties

1.1 Luster

Vitreous

Adamantine, Greasy

1.2 Pleochroism

AbsentWalter Schumann

Pleochroic haloes have been observed. Dichroic in yellow

1.3 Dispersion

None0.07

0.007 1

1.4 Transparency

Translucent, Opaque . May be translucent when backlit on the edges.

Transparent, Translucent

1.5 Refractive Index

1.544-1.5531.990-2.105

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Trigonal

tetragonal

1.8 Birefringence

0.007-0.0100.096-0.098

0 0.296

1.9 Clarity

Translucent

Transparent

Aventurine and Cassiterite Optic Character

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

Compare All Gems

Aventurine Vs Bastnsite

Aventurine Vs Benitoite

Aventurine Vs Baryte Barite

Aventurine and Cassiterite Transparency

Similar to their colors, Aventurine and Cassiterite 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, Aventurine is Opaque . May be translucent when backlit on the edges. and Translucent while Aventurine is Opaque . May be translucent when backlit on the edges. and Translucent in appearance.