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FEATURED GEM 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 BACK TO ALL GEMS
opal
overview
Opals look like an amalgamation of all the colored gemstones in one. The best specimens have a very wide range of colors within the stone. This range heavily influences the value of each opal. The shifting colors are caused by matrices of silica spheres that refract light in different ways and different angles based on the location of the light source. Throughout history, many theories emerged about the origin of this curious type of gemstone. Even though we understand them scientifically today, that doesn't diminish the awe one feels when looking at a high quality opal.
Opal Earring
Opal Ring
 
Peridot Bracelet
0.2 microns

Grids of silica spheres 0.2 microns in size create red play-of-color flashes.

 
1829

The novel “Anne of Geierstein” gave opal a reputation of being unlucky.

 
20% water

The novel “Anne of Geierstein” gave opal a reputation of being unlucky.

QUALITY FACTORS
color
Color Diamond

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

clarity
Clarity Diamond

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

cut
Cut Diamond

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

carat weight
Carat Weight Diamond

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

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