NPT QuartzScapes® Regular Series QUARTZSCAPES MARLIN BLUE Mariner Blue Pool Finish Parent Kit - Finish your pool with distinction! QuartzScapes Regular Series Mariner Blue quartz pool finish creates light blue water color and is comprised of white Portland cement, natural quartz aggregates, Black and Cobalt Green T-Grade colored quartz highlights. Because natural quartz is ten times harder and more durable than marble, QuartzScapes is perfect for both commercial and residential installations.