While Earth was spinning covered glaciers, inside was the same molten core we now float atop. The Earth crust slurry is at the neck, from the Mid-Atlantic Ridge and it organized into these brick-shapes as it dried and was fired (in relation to the stress memories of the clay body below it). The matte white glaze was assembled from refined materials. The Namibian rock that reports on global glaciers 600 million years ago is in the body of pot, was evenly applied, and made branching patterns during firing. It gets it's golden colors from mettalic oxides in the clay below interacting with it during firing.