Flame worked borosilicate sterling silver and 24K fumed implosion marble. This handmade, one of a kind marble has been fumed with Sterling Silver and 24k gold on the inside and the back side fumed with Sterling Silver. The pattern on the inside is achieved in part by applying thin layers of vaporized silver and gold to the inside of a piece of glass tubing. The tubing is then closed off and melted down into a solid mass, condensing the pattern created through the fuming process. It is 1.18" in diameter (29.9mm) and signed "J.Cavagnaro '20". This marble will arrive safely packed from my Dagsboro, DE studio.