Thrown in onyx black porcelain, the pebbles are shaped and hollowed from onyx black porcelain. The large dish, part glazed, part unglazed, is reflective of my glazing process and inspired by Cullernose Point coastal area of Northumberland. Comes with 4 hollowed out porcelain pebbles as pictured. Dimensions 48cm x 3.5cm. These dishes can be displayed in an interior space and also make perfect bird baths with pebble stepping stones for the birds.