Some people confuse Zircon, a natural stone, with cubic zirconia, which is a manmade product. Zircon is a 100% natural gem of the earth. With it's very high refractive index and strong dispersion, Zircon has intense fire and brilliance and is often used as a substitute for diamonds. Here you will find AAA Zircon Beads including Briolettes and Rondelles in glistening shades of blue or rich brownish red tones.