Designed and made by local Adirondack artist, Peter Shrope, these ceramic mugs are handcrafted, using an original glaze recipe made with 100% pure crushed Adirondack rock. No two are alike. Microwave and dishwasher safe. Made locally in Rainbow Lake, NY in the northern Adirondacks. Because each mug is handmade the actual shipped mug may vary slightly in size, shape, and color.