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Boulder Opal
Boulder Opal

Shattuckite
Shattuckite



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X
Boulder Opal
X
Shattuckite

Boulder Opal and Shattuckite Optical Properties

Optical Properties

Luster

-
Silky

Pleochroism

-
X = very pale blue; Y = pale blue; Z = deep blue

Dispersion

0.010.02
0.005 1
👆🏻

Transparency

Transparent, Translucent
Translucent

Refractive Index

1.370-1.4701.752-1.815
1 3.25
👆🏻

Optic Character

-
-

Crystal System

-
Orthorhombic

Birefringence

-99990.063
0 0.296
👆🏻

Clarity

Transparent
Translucent

Boulder Opal and Shattuckite Optic Character

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

Boulder Opal and Shattuckite Transparency

Similar to their colors, Boulder Opal and Shattuckite 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, Boulder Opal is Transparent and Translucent while Boulder Opal is Transparent and Translucent in appearance.