Material properties of diamond these are known as ballas and are important to industry as they lack the cleavage planes of single-crystal diamond. Carbonado is a similar opaque microcrystalline form which occurs in shapeless masses. Like ballas diamond, carbonado lacks cleavage planes and its specific gravity varies widely from 2.9 to 3.5. Bort diamonds, found in Brazil, Venezuela, and Guyana, are the most common type of industrial-grade diamond. They are also polycrystalline and often poorly crystallized; they are translucent and cleave easily. Because of its great hardness and strong molecular bonding, a cut diamond's facets and facet edges appear the flattest and sharpest. A
Carbonado, Washington settled during an economic boom in the region. The boom was brought on by raw material demands in nearby growing towns such as Seattle and Tacoma. Starting with the town of Burnett and moving on through Wilkeson, Carbonado, Montezuma, Fairfax, and finally Manley Moore, these settlements sprawled up the valley to the very boundary of Mount Rainier National Park. Most of these towns were company towns, meaning that they specialized in the harvest of raw materials owned the plot of land that the town was situated on and that the resources were harvested from. Often—and such was the case of