Blue Spark PC-11 is a glossy royal blue glaze that develops small triangular dark gray metallic crystals, creating a rich surface reminiscent of lapis lazuli. This opaque glaze maintains a consistent color and does not break over texture, making it especially striking on smooth forms and sculptural work. 

• Cone 5–6
• Opaque metallic finish
  
• Not food safe
  
• Glaze may run.

Test tile image courtesy of Amaco