Natural Gemstone Beads Strands, Grade "AB" Quartz Crystal, Round, Clearabout 10mm in diameter, hole: 1mm; about 39pcs/strand, 15.5 inchClear quartz is named by its glittering and translucent appearance. Itâs known as the king of quartz due to the largest number and the most widely used. The natural inclusions create an inner sparkle that resembles glistening ice crystals. Itâs ideal for gorgeous and noble jewelry design.