I assume that the PRC being used to make the Diamond PRC tables is very similar to Richlite which is made in Tacoma, Washington or possibly Paperstone made in Hoquiam, Washington or perhaps another manufacturer. Its basically coloured recycled paper treated with phenolic resin compound (similar to what pool balls are made of) and compressed under heat and pressure to become extremely hard. When machined on a curve or off the horizontal plane or axis, the numerous paper edge layers show up and resemble wood grain. It can be polished and buffed out to be smooth and somewhat shiny. Otherwise it has a hard leathery type texture as in Epicurean cutting boards. The paper can be treated or coloured before the phenolic resin process, in Diamond’s case charcoal or black. It is used for numerous products including kitchen counter tops, skate board park surfaces, siding or panels, cutting boards etc. Gibson Guitars uses it for fingerboards to replace ebony wood.