Top Plaza Natural Matte Black Agate Onyx Loose Gemstones Beads Charms String of Beads for Jewelry Making(10mm) Some stones are natural and some are synthetic, please select the one you wanted when placing order. 4mm,6mm,8mm,10mm beads are available. Length: Approx 15-15.5'' Please note each stone is one and only , the one you receive may vary from the picture but we will try to send the most similar ones. Each order comes with a grey velet bag printed brand name Top Plaza. Shipping time is about 2-3 weeks.