An hourglass measures time, this time is measured in diamond grains. Set behind Quartz Crystal is .50 carat of White Diamond Grains. The 1"x 1/2" Silver oval can turn to start the time again, the grains will fall to the bottom. Wear it solid Silver or crystal side up. The solid Silver oval can be customized with engraving. The delicate Silver double wire Band Measure 2mm in width.