4/19/2023 0 Comments Galaxy opalSpheres about 0.2 microns in size produce red. Spheres that are approximately 0.1 microns (one ten-millionth of a meter) in diameter produce violet. The color depends on the sizes of the spheres. And we can observe the result of this process as play-of-color or iridescence. When the lightwaves travel between the spheres of silica, they diffract or bend.Īs they bend, they break up into the colors of the rainbow or spectral colors. Play-of-color or opalescence occurs in precious opal because of light diffraction. It has no brown spots of soot or columnar structure. It occurs in a variety of colors: from white through the whole rainbow specter to black. Real opal possesses a magnificent play-of-color, or iridescence spread evenly, but not in an irregular pattern. Some of the rocks where opal can form include basalt, limonite, and rhyolites. That is why the recommendation to store opal away from sunlight exists. Water content in opals can reach up to 20 percent. Opal is made up of microscopic spheres arranged in a grid-like pattern. It is an amorphous and hydrated version of silica. It means that opal doesn’t have a crystal structure. Opal, unlike other gemstones, is not a mineral. If you are interested in checking out the best rockhounding tools I recommend and use you can find them by clicking here (Amazon link). ![]() How to Tell and Identify if Opal is Real or Fake? Further, you will have full disclosure of what is natural opal how natural opals from different localities vary the most common types of fake opals and, of course, a comprehensive guide, which will help you to differentiate a natural gem from a fake one. Unlike the natural opal, they can have a columnar structure or lizard skin surface texture.Īs the gem market is flooded by fake opals and fake opals prices are quite high, it’s necessary to be prepared. ![]() Plastic, glass, and synthetic fake opals are also widespread. Doublets or triplets can be distinguished by the side view, in case they are not enclosed into metal. ![]() The most common fake opal is assembled stone. To make the opal affordable to a wider range of people, a lot of different fakes have been created. Sometimes opal’s mesmerizing optical effect is compared to fireworks, jellyfish, galaxy, or lightning. Opal is highly praised for its kaleidoscopic play-of-color. As an Amazon Associate, I earn from qualifying purchases with no additional costs for you.
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