This is a Balinese gamelan ball! It's a charm that makes a shimmering sound when shaken. It's said to be an item inspired by the sound of the traditional Balinese gamelan music. The design combines an orange ball and an angel. Also known as a "dream ball," it's popular as a good luck charm for making wishes come true. It has a "925" stamp on the inside of the Vatican. Size comparison with a 500 yen coin in the fourth photo.