Created by the Murano glass artist Maestro Mario Costantini who started learning his craft at the age of eleven. The Calcedonia technique, which uses silver nitrate to create unpredictable striations making each piece a true one of a kind work of art, is thought to be one of the oldest, and rarest types of glass. Developed in Murano during the fifteenth century, the technique was lost only to be rediscovered centuries later. Signed by the maestro.
