Tortoiseshell and Cassiterite Optical Properties

Tortoiseshell

Cassiterite

Add ⊕

1 Optical Properties

1.1 Luster

Not Available

Adamantine, Greasy

1.2 Pleochroism

Not Available

Pleochroic haloes have been observed. Dichroic in yellow

1.3 Dispersion

NA0.07

0.007 1

1.4 Transparency

Gemmological Tables (2004)

Transparent, Translucent

1.5 Refractive Index

1.540-1.5601.990-2.105

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Not Available

tetragonal

1.8 Birefringence

Not Available0.096-0.098

0 0.296

1.9 Clarity

OpaqueUlrich Henn and Claudio C. Milisenda

Transparent

Tortoiseshell and Cassiterite Optic Character

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

Tortoiseshell Vs Watermelon Tourmaline

Tortoiseshell Vs White Opal

Tortoiseshell Vs Wardite

Tortoiseshell and Cassiterite Transparency

Similar to their colors, Tortoiseshell 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, Tortoiseshell is Gemmological Tables (2004) while Tortoiseshell is Gemmological Tables (2004) in appearance.