These brightly colored beads will create a one of a kind look in your handmade jewelry designs and craft projects. Our Calsilica beads come from East Asia and are a man-made mixture of Calcite, resin and pigments. Calsilica comes in many different colors and shapes and makes great statement pieces for your projects. These beads measure 20mm long by 20mm wide and the hole measures .5mm in diameter (the hole size may vary on each bead). There are 20 beads on a strand. Each strand measures 15" inches long. All photos have been taken indoors with sunlight, but as always, computer and mobile screens display colors differently.