This is a statment piece of jewelry made from sterling silver & rainbow obsidian. The rainbow obsidian measures 1.4" x 1.9". Because the stone is so large and could overpower the setting I designed a sterling silver castellated bezel to enclose the stone. A castellated bezel uses a thicker wire to surround the stone. The backplate is hand stamped with a line pattern to bring out the separations in the bezel. Rainbow Obsidian is a deep black color, the rainbow effect is caused by light refracting off of tiny air bubbles inside the stone. The stone is naturally formed of volcanic glass. I pierced the shape of a volcano on the back to remind the wearer how this stone was created. The sterling silver pendant is 1.75" wide x 2.85" long including the bale. Hand stamped sterling silver and lightly patinaed to give it a aged finish.