The beautifully mottled glaze combines with the 24K gold or platinum edge, creating function and form with a touch of bling. Panthera's reactive glaze means no two pieces will ever be exactly the same. The Japanese philosophy of Wabi Sabi, or the beauty of imperfection, radiates from this collection. The glaze creates variances, such as the size and quantity of spots, which is part of the beauty of the piece. The Panthera collection is stoneware, hand-finished with 24K gold or platinum. Dishwasher safe, not for use in a microwave