Prouna Jewelry Box Valentine Jewelry Box is part of the collection of Prouna, makers of luxury fine bone china dinnerware, home decor and giftware, stunning and elegant. As an industry leader, Prouna is the first to embed Swarovski Crystal onto fine bone china. All Prouna products are hand painted in 24kt gold or platinum. Mastering the art of making fine bone china for over 70 years, creating investment pieces that are made to last and be enjoyed for generations. Prouna takes a global vision and works with the very best designers from around the world. Hand washing recommended.