Sonolite and Sard Optical Properties

Sonolite

Sard

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1 Optical Properties

1.1 Luster

Vitreous

Waxy

1.2 Pleochroism

Not Available

AbsentWalter Schumann

1.3 Dispersion

NANone

0.007 1

1.4 Transparency

TransparentAnthony et al, Handbook of mineralogy (2001)

Translucent

1.5 Refractive Index

1.763-1.7931.535-1.539

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Not Available

1.8 Birefringence

Not Available0.008-0.010

0 0.296

1.9 Clarity

TransparentAnthony et al

Translucent

Sonolite and Sard Optic Character

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

Similar to their colors, Sonolite and Sard 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, Sonolite is Handbook of mineralogy (2001) and TransparentAnthony et al while Sonolite is Handbook of mineralogy (2001) and TransparentAnthony et al in appearance.