Hemera - Chunky choker made of brass  

In Greek mythology Hemera was the personification of day. According to Hesoid she was the daughter of Erebus (Darkness) and Nyx (Night), and the sister of Aether.

Story

Night and Day passing near greet one another as they cross the great bronze threshold. The one is about to go in and the other is going out the door, and never does the house hold them both inside, but always the one goes out from the house and passes over the earth, while the other in turn remaining inside the house waits for the time of her own departure, until it comes. The one holds much-seeing light for those on the earth, but the other holds Sleep in her hands, the brother of Death—deadly Night, shrouded in murky cloud.^[8]