The unique speckles from the reactive gray glaze lend artisanal appeal to the mug's beautiful and casual shape. The mug is hand-glazed by artisan ceramicists and it's made in Portugal. DETAILS: - Approximate measurements 3.5" diameter x 3.75"H. - Holds approximate 18 oz. - Hand-cast stoneware. - Dishwasher safe but hand washing suggested. - Microwave and oven safe up to 225 degrees. - Made in Portugal. Selling this piece in an effort to minimize my pottery collection. Photos are of the actual item being sold.