Tantalite and Boulder Opal Optical Properties

Tantalite

Boulder Opal

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1 Optical Properties

1.1 Luster

Resinous

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

2.190-2.4571.370-1.470

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Orthorhombic

Not Available

1.8 Birefringence

0.083Not Available

0 0.296

1.9 Clarity

TransparentWalter Schumann

Transparent

Tantalite and Boulder Opal Optic Character

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

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