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Linarite
Linarite

Danburite
Danburite



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Linarite
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Danburite

Linarite and Danburite Optical Properties

Optical Properties

Luster

Sub-Adamantine, Vitreous
Vitreous, Greasy

Pleochroism

X = pale blue; Y = blue; Z = Prussian blue
Weak: pale yellow yellow

Dispersion

0.050.02
0.005 1
👆🏻

Transparency

Transparent
-

Refractive Index

1.809-1.8591.627-1.639
1 3.25
👆🏻

Optic Character

-
Biaxial/+

Crystal System

monoclinic
Orthorhombic

Birefringence

0.0500.006
0 0.296
👆🏻

Clarity

Transparent
TransparentUlrich Henn and Claudio C. Milisenda

Linarite and Danburite Optic Character

Linarite and Danburite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Linarite and Danburite 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 Linarite and Danburite 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. Danburite has Biaxial/+ character.

Linarite and Danburite Transparency

Similar to their colors, Linarite and Danburite 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, Linarite is Transparent while Linarite is Transparent in appearance.