1 Granite is a very hard stone and 100 percent natural. Itâs mined from quarries all around the world, cut down to a manageable size, and then polished to a fine finish.  Quartz is slightly different in that it is not 100 percent natural.
What does DC mean? District of Columbia, D.C., DC (noun) the district occupied entirely by the city of Washington; chosen by George Washington as the site of the capital of the United States and created out of land ceded by Maryland and Virginia
Quick Answer. When talking about electrical current, AC stands for alternating current and DC stands for direct current.. Alternating current is the type of current that comes from a power plant and outlet, in which the current changes directions rapidly.