Lava Bowl, Crystalline Center
5.5" wide x 4.5" high
From 4,500 meters down thru water column came this sediment off the Virginia coast. Evenly applied sediment melted into the branching pattern and, when molten, flowed over a brushed band of black glaze with cobalt. When sediment is applied thickly, sometimes it bubbles up, in this case it lifted crystals up. A fantastic example of what can happen -- click to see the detail of the center.