Discover the Amazing Beauty of Koroit Boulder Opal: A Unique and Stunning Australian Gemstone with a Black Matrix and Bright Hues
Have you ever seen a gemstone that looks like a piece of art? A gemstone that has a black background with colorful patterns and shapes? A gemstone that is so rare and unique that no two pieces are exactly alike? If not, then you should check out the Australian Koroit Boulder Opal, one of the most stunning and fascinating gems in the world. What is a Koroit Boulder Opal? A Koroit Boulder Opal is a type of opal that comes from a specific area in Queensland, Australia. It is called a boulder opal because it forms in cracks and cavities of ironstone boulders. Ironstone is a hard and dark rock that contains iron. The opal fills the spaces in the ironstone and creates a contrast between the black matrix and the bright colors. The colors in the opal are caused by the way light interacts with tiny spheres of silica, the main ingredient of opal. The colors can change depending on the angle of the light and the position of the viewer. This phenomenon is called play-of-color and it makes op...