Riebeckite and Boulder Opal Optical Properties

Riebeckite

Boulder Opal

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1 Optical Properties

1.1 Luster

Vitreous, Silky

Not Available

1.2 Pleochroism

X = blue

AbsentWalter Schumann

1.3 Dispersion

NANone

0.007 1

1.4 Transparency

Not Available

Transparent, Translucent

1.5 Refractive Index

1.680-1.6981.370-1.470

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

monoclinic

Not Available

1.8 Birefringence

0.005-0.008Not Available

0 0.296

1.9 Clarity

Not Available

Transparent

Riebeckite and Boulder Opal Optic Character

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

Similar to their colors, Riebeckite and Boulder Opal 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, Riebeckite is Not Available while Riebeckite is Not Available in appearance.