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One of the lightest cobalts this is well suited for small blown work, as well as sculpture when a medium transparent blue is desired. Cobalt Blue can take a lot of heat and can be worked in a wide range of flame settings. Though the color is extremely intense, be sure to stay out of reducing flames to prevent any dulling or graying.
Northstar Glassworks borosilicate rods are approximately 20" in length. Sold individually. 33 COE. Project below courtesy of manufacturer.