Bases Covered: Quartz can be used for much more than counters. Fork This manufacturer employs it in its Shower-Redi base. The product is made from 93 percent quartz and 7 percent resins, which allow the material to be bent and shaped into a 1 1/4-inch-thick piece. Available in 12 colors and two sizes, the base has a 1/4-inch slope per foot and 3 3/4-inch curbs. Cost: $1,180 and $2,140. Denali Stoneworks. 503-244-4471.