The Porcupine Vases are beautifully handcrafted by skilled Polish artisans. The enchanting, encased color effect is achieved through a meticulous hand-blowing technique, in which layers of clear and white-colored glass are expertly fused together. Following this, artisans skillfully apply clear glass to the exterior, and with the use of a special tool, they delicately create the distinctive pinched design that adorns these exceptional vases. Each piece is unique and one-of-a-kind.