Sulphur and Lazulite Optical Properties

Sulphur

Lazulite

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1 Optical Properties

1.1 Luster

Not Available

1.2 Pleochroism

Not Available

Transparent crystals show a strong pleochroism: colorless light blue dark (violet) blueHerve Nicolas Lazzarelli

1.3 Dispersion

NA0.01

0.007 1

1.4 Transparency

TranslucentWalter Schumann, Gemstones of the world (2001)

Transparent, Translucent

1.5 Refractive Index

1.958-2.2451.604-1.646

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Not Available

monoclinic

1.8 Birefringence

0.2910.031-0.036

0 0.296

1.9 Clarity

TranslucentWalter Schumann

Transparent

Sulphur and Lazulite Optic Character

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

Similar to their colors, Sulphur and Lazulite 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, Sulphur is Gemstones of the world (2001) and TranslucentWalter Schumann while Sulphur is Gemstones of the world (2001) and TranslucentWalter Schumann in appearance.