Black opal is indeed the most valuable variety of opal and it is highly sought after for its unique play of color. It is named black opal because of its dark or black body color, which allows the vibrant colors to stand out even more. While Australia is the most famous source of black opal, it can also be found in other places such as the United States, Ethiopia, Honduras, and Ethiopia. The origin of the black opal can also influence its value and desirability.
