Welo Opal Natural Gemstone Sterling Silver Pendant Necklace

An iridescent free form shaped opal with flashes of pink, red, blue, green, yellow, and purple. It is set inside a 925 sterling silver bezel setting and comes with an 18 inch 925 sterling silver chain. The opal is approximately 12x8mm. Australia produces around 97% of the world’s opals. Nevada produces a wide variety of precious black, crystal, white, fire, and lemon opals. Other significant deposits of precious opal around the world can be found in the Czech Republic, Nicaragua and Ethiopia. The water content of Opal is usually between three and ten percent, but can be as high as twenty percent. Opals are known for their unique display of flashing rainbow colors called play-of-color. The areas within an opal that produce a play-of-color are made up of sub-microscopic spheres of silica arranged in a grid-like pattern. As light passes through the spheres it is diffracted into the colors of the spectrum. The size of the spheres and their packed geometric pattern determine the quality of