Cordierite and Linarite Optical Properties

Cordierite

Linarite

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1 Optical Properties

1.1 Luster

Greasy, Vitreous

Sub-Adamantine, Vitreous

1.2 Pleochroism

X = pale yellow

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

1.3 Dispersion

NANA

0.007 1

1.4 Transparency

Not Available

Transparent

1.5 Refractive Index

Not Available1.809-1.859

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Orthorhombic

monoclinic

1.8 Birefringence

Not Available0.050

0 0.296

1.9 Clarity

Not Available

Transparent

Cordierite and Linarite Optic Character

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

Similar to their colors, Cordierite 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, Cordierite is Not Available while Cordierite is Not Available in appearance.