NPT QuartzScapes® Regular Series QUARTZSCAPES FRENCH GRAY French Gray Pool Finish Parent Kit - Finish your pool with distinction! QuartzScapes Regular Series French Gray creates light gray water color and is comprised of French gray pigmented white Portland cement, natural quartz aggregates, Black 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.