C.L. Industries SunStone® SSBLUE 80 lb Blue Quartz Pool Finish. A combination of durable quartz aggregate, enhanced with Portland cement and colored quartz, it not only looks great but easily resists degradation. Its wide array of colors and textures make it ideal for pools, spas, and water designs in any environment. Quartz creates a strong, nonporous, stain-resistant finish to your pool that is resistant to erosion caused by chemical imbalances in pool water.