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
Malcolm and Angus Young developed the idea for the band's name after their sister, Margaret Young, saw the initials AC/DC on a sewing machine. AC/DC is an abbreviation meaning  alternating current / direct current  electricity. The brothers felt that this name symbolised the band's raw energy, power-driven performances of their music. AC/DC is pronounced one letter at a time, though the band are colloquially known as Acca Dacca in Australia.