4.25" wide x 1.75" high
The sediment can be seen as it behaves when applied thickly and thinly. Sea glass center, celadon and copper green glazes assembled from refined materials. Has some translucency.
This Urania Basin link will bring you to a story about 93 Egyptians rescued in the eastern Mediterranean -- an unintended consequence of scientists investigating a deep hypersaline anoxic basin (DHAB).