SGM Diamond Brite™ PBC309 80 lb Blue Quartz Exposed Aggregate Pool Finish. Diamond Brite’s dynamic, factory blended finishes and simple maintenance feature makes it well suited for fountains and spas, as well as other water features. Its insoluble quartz aggregate is unaffected by the harshest pool chemicals and resists permanent staining. The Diamond Quartz accent colors won’t rust, rub off or fade like other colored aggregates because our coating technology produces a tough, permanently bonded color aggregates. Additionally, the accent colors in Diamond Brite® give the surface a variegated appearance, masking the slight imperfections that are readily apparent in traditional finishes. You’ll also have an added sense of security knowing that your pool is comfortable to the feet and slip resistant.