In Babylonia, in place of the bas relief, there is greater use of three-dimensional figures in the round – the earliest examples being the statues from Girsu, that are realistic if somewhat clumsy. The paucity of stone in Babylonia made every pebble precious, and led to a high perfection in the art of gem-cutting. Two seal-cylinders from the age of Sargon of Akkad are among the best examples of their kind. One of the first remarkable specimens of early metallurgy to be discovered by archaeologists is the silver vase of Entemena. At a later epoch, great excellence was attained in the manufacture of such jewellery as earrings and bracelets of gold. Copper, too, was worked with skill; indeed, it is possible that Babylonia was the original home of copper-working.