Opal is one of the gemstones that has been prized for its ambrosial powers since ancient times. The gemstone is a hydrated amorphous form of silica. The crystal can be found in shades like orange, pink, blue, black, and many more colors. This priceless opal stone is available in a variety of vibrant colors, including yellow, red, orange, green, blue, black, and pink. It has a waxy to sub vitreous luster and hardness ratings between 5.5 and 6. It is primarily found in the western US, Mexico, and Brazil. Opal Jewelry is one of the ancient gemstones that has been used for ceremonial and healing purposes since ancient times. Ethiopia and Australia provide the best quality of opals to the world.