Lawsonite and Rosasite Optical Properties

Lawsonite

Rosasite

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1 Optical Properties

1.1 Luster

Vitreous, Greasy

Silky, Vitreous

1.2 Pleochroism

Weak

Strong: X = pale emerald green or colourless; Y = dark emerald green or pale blue; Z = dark emerald green or pale blue

1.3 Dispersion

NANA

0.007 1

1.4 Transparency

Not Available

1.5 Refractive Index

1.672-1.6761.672-1.688

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Orthorhombic

monoclinic

1.8 Birefringence

0.019-0.0210.139-0.143

0 0.296

1.9 Clarity

Not Available

Lawsonite and Rosasite Optic Character

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

Similar to their colors, Lawsonite and Rosasite 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.