The Old necklace is described as "old and beat up." It has a grayish brown lace and a five-pointed star-shaped pendant made of several thin pins attached to it.
The Old Necklace has belonged to Aida for an unprecedented amount of time. During the events of Sonic Unleashed, she dropped it in the streets of Spagonia without knowing it. It was later found by Elio, who considered giving it to his mother as a birthday gift, but he found it too old and beat up. He and his sister Lucia would later meet Sonic the Hedgehog and Chip and tell them about the necklace.
When Aida discovered she had lost her necklace, she enlisted Sonic to find it. When Elio met Sonic again and was told of what he was looking for, Elio figured it was the necklace he had found, and gladly handed it over to Sonic so it could be returned. When Sonic brought the Old Necklace back to Aida, she was overjoyed and gave him the Lovely Ring to give as a reward to those who found her necklace.