Pyrope Spessartine and Hibonite Optical Properties

Pyrope Spessartine

Hibonite

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1 Optical Properties

1.1 Luster

Not Available

Vitreous

1.2 Pleochroism

Not Available

O = brownish gray; E = gray

1.3 Dispersion

0.02NA

0.007 1

1.6 Transparency

Gemmological Tables (2004) More from other references

Handbook of mineralogy (2001)

1.7 Refractive Index

1.730-1.8201.79-1.807

1 3.25

1.11 Optic Character

Not Available

1.12 Crystal System

Not Available

Hexagonal

1.13 Birefringence

0.027Not Available

0 0.296

1.15 Clarity

TransparentUlrich Henn and Claudio C. Milisenda

Handbook of mineralogy (2001)

Pyrope Spessartine and Hibonite Optic Character

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

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