Linarite and Staurolite Optical Properties

Linarite

Staurolite

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1 Optical Properties

1.1 Luster

Sub-Adamantine, Vitreous

Resinous

1.2 Pleochroism

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

X = colorless; Y = pale yellow; Z = golden yellow

1.3 Dispersion

NANA

0.007 1

1.4 Transparency

Transparent

Blue Chart Gem Identification (2010) More from other references

1.5 Refractive Index

1.809-1.8591.736-1.762

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

monoclinic

1.8 Birefringence

0.0500.009-0.015

0 0.296

1.9 Clarity

Transparent

Blue Chart Gem Identification (2010) More from other references

Linarite and Staurolite Optic Character

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

Similar to their colors, Linarite and Staurolite 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.