Conundrums of a Landscaper Series : Blackstar Gravel ...
Feb 03, 2016· The manager said that the stone was actually Dolomite, not Basalt, like the other name it is frequently called (be sure to read to the end.) According to the manager, the stone is quarried close to Del Rio, Texas, but the reason the price is high is because the railroads use the same gravel to support the railroad ballast.