Carbonado typical gem diamonds. Lead isotope analyses have been interpreted as documenting crystallization of carbonados about 3 billion years ago. The carbonados are found in younger sedimentary rocks. Mineral grains included within diamonds have been studied extensively for clues to diamond origin. Some typical diamonds contain inclusions of common mantle minerals such as pyrope and forsterite, but such mantle minerals have not been observed in carbonado. In contrast, some carbonados do contain inclusions of minerals characteristic of the Earth's crust: these inclusions do not necessarily establish formation of the diamonds in the crust, however, because while these obvious crystal inclusions occur
Carbonado, Washington been carpeted by ivy and trees. The school makes up what is known as the Carbonado Historical School District and grades K-8th still attend there. Many of the houses that the company built and originally owned still line main street. They look very similar to each other as was the style of the company builders at the time. And though many of the miners abandoned the town, in some of those houses still live the direct descendants of the original miners. Carbonado was officially incorporated on September 13, 1948. Carbonado is located at (47.079724, -122.051433). According to the United States