I purchased this at the Art and Antique Show, held annually at the Tokyo Prince Hotel, several years ago. The purchase price was 20,000 yen. I bought it from a very reliable antique jewelry dealer, a shop I always patronize. It has a very simple design. There are no hallmarks. It might be around K9 gold, but I can't say for sure. The pearls are oval and very beautiful, but it's unclear whether they are Akoya pearls or freshwater pearls. It's very easy to wear and cute. I like it, but I don't think I'll wear it anymore, so I'm putting it up for sale.