Opal

Opal

 

 


Fireworks. Jellyfish. Galaxies. Lightning. Opal's shifting play of kaleidoscopic colors is unlike any other gem.

Opal's microscopic arrays of stacked silica spheres diffract light into a blaze of flashing colors. An opal's color range and pattern help determine its value.

BIRTHSTONE: October


 

 

Gemstones Opal Bracelet

Overview

Because opal has the colors of other gems, the Romans thought it was the most precious and powerful of all. The Bedouins believed that opals contained lightning and fell from the sky during thunderstorms. When Australia's mines began to produce opals commercially in the 1890s, it quickly became the world's primary source for this October birthstone.

Gemstones Opal EarringGemstones Opal Ring

 

 

 

 

 

 

 

 


 

0.2 Microns

1829

20% Water

Grids of silica spheres 0.2 microns in size create red play-of-color flashes.
The novel "Anne of Geierstein" gave opal a reputation of being unlucky.
Opal contains up to 20% water trapped in its silica structure.

 


 

quality factors

Play-of-color, intensity, and pattern are important value factors.

 

color

Opal Color Diamond

Opal's spectacular play-of-color can display all the colors of the rainbow.

clarity

Opal Clarity Diamond

Experts expect different levels of clarity for different types of opals.

cut

Opal Cut Diamond

Fine opals are often cut into irregular shapes that keep as much play-of-color as possible.

carat weight

Opal Carat Weight

Opal has relatively low density so even larger sizes can be comfortable to wear.

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