Jia Jia - The white and citrus opal that makes up JIA JIA's 14kt gold Arizona necklace is a karmic stone, associated with optimism, positivity and balanced energy, reflective of founder Jia-Jia Zhu's fascination with precious stones. Exclusive to MATCHESFASHION, it's handmade in New York using crystals cleansed using an ancient ritual, then finished with a lobster clasp fastening.