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Linarite
Linarite

Brazilianite
Brazilianite



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Linarite
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Brazilianite

Linarite and Brazilianite Optical Properties

1 Optical Properties
1.1 Luster
Sub-Adamantine, Vitreous
Vitreous
1.2 Pleochroism
X = pale blue; Y = blue; Z = Prussian blue
Very weakWalter Schumann
1.3 Dispersion
NA0.01
Fluorite Optical Properties
0.007 1
1.4 Transparency
Transparent
Gemmological Tables (2004) More from other references
1.5 Refractive Index
1.809-1.8591.602-1.625
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
monoclinic
monoclinic
1.8 Birefringence
0.0500.019-0.021
Achroite
0 0.296
1.9 Clarity
Transparent
TransparentUlrich Henn and Claudio C. Milisenda

Linarite and Brazilianite Optic Character

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

Linarite and Brazilianite Transparency

Similar to their colors, Linarite and Brazilianite 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.