Linarite and Star Sapphire Optical Properties

Linarite

Star Sapphire

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1 Optical Properties

1.1 Luster

Sub-Adamantine, Vitreous

Not Available

1.2 Pleochroism

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

Not Available

1.3 Dispersion

NANA

0.007 1

1.4 Transparency

Transparent

Transparent, Translucent

1.5 Refractive Index

1.809-1.8591.758-1.780

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

monoclinic

Not Available

1.8 Birefringence

0.0500.007-0.010

0 0.296

1.9 Clarity

Transparent

Linarite and Star Sapphire Optic Character

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

Similar to their colors, Linarite and Star Sapphire 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.