Introducing our Copper Reduction Spot porcelain Cup, a unique and funky addition to your porcelain collection. The heavy copper glaze fumes into its neighboring cup, creating a beautiful effect. The reduction atmosphere of the cup makes the copper turn red instead of green like in an electric kiln. Measuring 6.5cm high and 9cm wide, this cup is the perfect size for your morning coffee or tea. Add a touch of artistry to your home with our Copper Reduction Spot Cup.