I sculpted the original rainbow in PMC and had it cast in sterling. Rainbow measures 7/8" wide X 1/2" tall, oxidized, adjustable 16-18" sterling chain with Andesine at the center. Andesine is associated with the heart chakra and is used to dispel negativity while providing clarity to one's thoughts. According to metaphysical beliefs, andesine is also a grounding stone that can help ease stress.