Constellation Sleepers Silver by Krystle Knight. Infused with the earth’s infinite wisdom, the Constellation Sleepers feature a pull-through design with a removable ball closure and a small, terminated Clear Quartz crystal.A powerful healing stone, Clear Quartz will bring clarity and awareness to the mind, body and soul, awakening and amplifying the wearer. 925 Sterling Silver Sleeper 1.5cm. Sleeper Thickness 1mm. Clear Quartz .5cm x .5cm