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Linarite
Linarite

Howlite
Howlite



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Linarite
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Howlite

Linarite and Howlite Optical Properties

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1 Optical Properties
1.1 Luster
Sub-Adamantine, Vitreous
Vitreous
1.2 Pleochroism
X = pale blue; Y = blue; Z = Prussian blue
NilArthur Thomas
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Transparent
Gemmological Tables (2004) More from other references
1.5 Refractive Index
1.809-1.8591.583-1.608
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
Achroite
0 0.296
1.9 Clarity
Transparent
Gemmological Tables (2004) More from other references

Linarite and Howlite Optic Character

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

Similar to their colors, Linarite and Howlite 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.