Friedelite and Linarite Optical Properties

Friedelite

Linarite

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1 Optical Properties

1.1 Luster

Not Available

Sub-Adamantine, Vitreous

1.2 Pleochroism

NilArthur Thomas

X = pale blue; Y = blue; Z = Prussian blue

1.3 Dispersion

NANA

0.007 1

1.4 Transparency

Translucent

Transparent

1.5 Refractive Index

1.627-1.6631.809-1.859

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

monoclinic

1.8 Birefringence

0.032-0.0350.050

0 0.296

1.9 Clarity

Translucent

Transparent

Friedelite and Linarite Optic Character

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

Similar to their colors, Friedelite and Linarite 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.