RD stands for reconstructed diamond, a type of synthetic quartz designed to emulate the brilliance of diamond. Produced through advanced hydrothermal processes, RD quartz is optically and physically nearly indistinguishable from diamond. The material has exceptional clarity, high refractive index, and hardness exceeding natural quartz. Colorless RD synthetics excel at dispersing light into rainbows. With refined cutting and polishing, they achieve superb light performance. While untreated RD quartz is crystal clear, treatments can impart vivid hues like blue, yellow, and pink. Settings that maximize light entry, like prong mounts, showcase the exceptional sparkle. High quality RD synthetic quartz makes an affordable, ethical alternative to mined diamonds.