Sinhalite and Fayalite Optical Properties

Sinhalite

Fayalite

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1 Optical Properties

1.1 Luster

Not Available

Vitreous, Resinous

1.2 Pleochroism

Trichroism: green light brown dark brownHerve Nicolas Lazzarelli

Faint

1.3 Dispersion

0.02NA

0.007 1

1.5 Transparency

Gemmological Tables (2004) More from other references

TransparentAnthony et al, Handbook of mineralogy (2001)

1.6 Refractive Index

1.665-1.7121.827-1.879

1 3.25

1.7 Optic Character

Not Available

1.8 Crystal System

Orthorhombic

1.9 Birefringence

0.036-0.0420.042-0.051

0 0.296

1.10 Clarity

TransparentUlrich Henn and Claudio C. Milisenda

TransparentAnthony et al

Sinhalite and Fayalite Optic Character

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

Similar to their colors, Sinhalite and Fayalite 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, Sinhalite is Gemmological Tables (2004) More from other references while Sinhalite is Gemmological Tables (2004) More from other references in appearance.