These tossers are really perfect for those little set ups that need something new and bold or maybe some delicate chain work but not too much. This is the charm for that. The AAA Genuine Herkimer Diamond Quartz Stone measures at about 4mm on average and is on a 1.5mm Oval Rolo Chain that measures at 8mm not including the jump ring this is on. Everything is Genuine and 14k. Go head toss them on anything!