Murano Glass Bead, Base Cobalt with Aventurina and Calcedonia Oval 22x15

This unique authentic Murano Glass Bead begins with a core of Cobalt Blue layered with sprinkles of Aventurina and swirols of Calcedonia all completely encased in clear Murano Glass. Note that there may be bubbles in the clear glass used in the overlay. This is normal and not a defect. No two ever exactly alike. The shape is an oval approximately 22mm by 15mm tall with a 1mm hole running lengthwise. NOTE: This technique of coloring glass is evolved in Murano as early as the 15th century. This special technique involves the use of silver nitrate in molten glass. The resulting coloration and designs are completely unexpected. We never know exactly the colors that will be revealed.