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Boulder Opal
Boulder Opal

Chrysoprase
Chrysoprase



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Boulder Opal
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Chrysoprase

Boulder Opal and Chrysoprase Optical Properties

Optical Properties

Luster

-
Vitreous, Waxy

Pleochroism

-
-

Dispersion

0.010.01
0.005 1
👆🏻

Transparency

Transparent, Translucent
Translucent, Opaque, Translucent to nearly opaque

Refractive Index

1.370-1.4701.530-1.543
1 3.25
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Optic Character

-
-

Crystal System

-
Trigonal

Birefringence

-99990.004
0 0.296
👆🏻

Clarity

Transparent
Translucent

Boulder Opal and Chrysoprase Optic Character

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

Similar to their colors, Boulder Opal and Chrysoprase 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.