Babylonian necklace is 3,600 years old. The swirl patterns and the shape of the gold beads which reflect the Sumerian tradition of jewelry. The Bronze Age is defined as the period of time that civilization began smelting copper (with up to 30% tin to create the alloy known as bronze) and trading it. Adoption of bronze technology was not universally synchronous, but it began around 3,300 BC. When man learned to combine metals to make alloys and the art of creating jewelry truly blossomed.