Green to Blue Color Change Sapphire unfaceted rondelles have a glass-like luster, exhibit excellent brilliance, have excellent polish, are well matched for a grayish tone, have a transparent body with minute internal characteristics, & the body color is a bluish-green hue that color changes to a greenish-blue hue for a superb Sapphire strand. This strand is a Color Change Sapphire with defined colors as seen in the photo. Size: 2mm - 3mm Stone: Sapphire Color Change Sapphire Smooth Rondelle Beads, Blue Green September Birthstone