Montebrasite and Boulder Opal Optical Properties

Montebrasite

Boulder Opal

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1 Optical Properties

1.1 Luster

Not Available

1.2 Pleochroism

Not Available

AbsentWalter Schumann

1.3 Dispersion

NANone

0.007 1

1.4 Transparency

TransparentWalter Schumann, Gemstones of the world (2001) More from other references

Transparent, Translucent

1.5 Refractive Index

1.578-1.6461.370-1.470

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Not Available

1.8 Birefringence

0.020-0.030Not Available

0 0.296

1.9 Clarity

TransparentWalter Schumann

Transparent

Montebrasite and Boulder Opal Optic Character

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

Similar to their colors, Montebrasite 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, Montebrasite is Gemstones of the world (2001) More from other references and TransparentWalter Schumann while Montebrasite is Gemstones of the world (2001) More from other references and TransparentWalter Schumann in appearance.