Friedelite and Cacoxenite Optical Properties

Friedelite

Cacoxenite

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1 Optical Properties

1.1 Luster

Not Available

Silky

1.2 Pleochroism

NilArthur Thomas

visible: O = Pale yellow E = Canary yellow to yellow orange

1.3 Dispersion

NANA

0.007 1

1.4 Transparency

Translucent

Not Available

1.5 Refractive Index

1.627-1.6631.575-1.585

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Monoclinic Prismatic H-M Symbol (2/m) Space Group: C 2/m

Hexagonal

1.8 Birefringence

0.032-0.035Not Available

0 0.296

1.9 Clarity

Translucent

Not Available

Friedelite and Cacoxenite Optic Character

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

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Friedelite and Cacoxenite Transparency

Similar to their colors, Friedelite and Cacoxenite 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, Friedelite is Translucent while Friedelite is Translucent in appearance.