NPT QuartzScapes® Caribbean QUARTZSCAPES ARUBA SKY Aruba Sky Pool Finish Parent Kit - Finish your pool with distinction! QuartzScapes Caribbean Series Aruba Sky pool finish creates medium blue water color and is comprised of light blue pigmented white Portland cement, natural quartz aggregate and Cobalt Blue and 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.