Boulder Opal and Crocoite Optical Properties

Boulder Opal

Crocoite

Add ⊕

1 Optical Properties

1.1 Luster

Not Available

Adamantine

1.2 Pleochroism

AbsentWalter Schumann

Distinctly trichroic

1.3 Dispersion

NoneNA

0.007 1

1.4 Transparency

Transparent, Translucent

Transparent

1.5 Refractive Index

1.370-1.4702.31-2.66

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Not Available

Monoclinic Prismatic H-M Symbol (2/m) Space Group: P 21/n

1.8 Birefringence

Not AvailableNot Available

0 0.296

1.9 Clarity

Transparent

Boulder Opal and Crocoite Optic Character

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

Compare Blue Gemstones

Boulder Opal Vs Chrome-Chalcedony

Boulder Opal Vs Chrysocolla

Boulder Opal Vs Chrome Tourmaline

Boulder Opal and Crocoite Transparency

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