Rutile and Boulder Opal Optical Properties

Rutile

Boulder Opal

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1 Optical Properties

1.1 Luster

Adamantine

Not Available

1.2 Pleochroism

Weak to distinct brownish red-green-yellow

AbsentWalter Schumann

1.3 Dispersion

NANone

0.007 1

1.4 Transparency

Transparent, Translucent

1.5 Refractive Index

2.609-2.9031.370-1.470

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

tetragonal

Not Available

1.8 Birefringence

0.296Not Available

0 0.296

1.9 Clarity

Transparent

Rutile and Boulder Opal Optic Character

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

Similar to their colors, Rutile 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, Rutile is Translucent and Transparent while Rutile is Translucent and Transparent in appearance.