Lawsonite and Williamsite Optical Properties

Lawsonite

Williamsite

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1 Optical Properties

1.1 Luster

Vitreous, Greasy

Waxy, Silky, Resinous, Greasy

1.2 Pleochroism

Weak

Not Available

1.3 Dispersion

NANA

0.007 1

1.4 Transparency

Not Available

TranslucentHerve Nicolas Lazzarelli, Blue Chart Gem Identification (2010)

1.5 Refractive Index

1.672-1.6761.530-1.575

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Orthorhombic

Not Available

1.8 Birefringence

0.019-0.021Not Available

0 0.296

1.9 Clarity

Not Available

TranslucentHerve Nicolas Lazzarelli

Lawsonite and Williamsite Optic Character

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

Similar to their colors, Lawsonite and Williamsite 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, Lawsonite is Not Available while Lawsonite is Not Available in appearance.