Multi-color Zircon Plain Rondelles measure approximately 3mm to 4mm in diameter, have a vitreous luster, an exceptionally high brilliance, a near diamond like luster, superb smooth shape, and the sparkling gem bodies are a dark reddish cognac hue to a slightly champagne hue for an exceptional strand. Zircon resembles the best features of diamond - high luster and excellent refraction of light.