This deep cobalt tumbler is decorated with silver nitrate that reacts on the surface of the glass to make this creamy and mildly reflective cosmic pattern.
NOTE: The nature of handblown glass is that every piece is truly unique. At Sirius we don't strive for factory line perfection and opt to embrace the fluid nature of molten glass allowing for some organic shaping and patterning of the glass. Your tumbler may not look exactly as pictured here. It will vary slightly in size and patterning. Tumblers are roughly between 5 and 6 inches tall and around 3 inches wide.