One example reported in Rapaport Magazine describes the efforts of De Beers Consolidated Mines (DBCM) to extract overlooked diamonds from 360 million tons of old tailings surrounding the Kimberley mines in South Africa. According to the company, thanks to advances in separating, sorting, and crushing equipment, very small diamonds can be recovered from the residue of the original diamondbearing ore.
Natural colored diamonds come in all shades and colors of the rainbow. The most popular colors and diamond types are a combination of pink, blue, brown, yellow, orange, green and red. Yellow is the most common naturally occurring color in a diamond. White, red, .