This is a ring called "Evening After the Rain" by Bene Bene. It's K10 yellow gold. I ordered size 13, but the finished size is a little larger than 13. I bought it about a year ago for around ¥43,000, but the K10 yellow gold was thinner than I expected, and the color wasn't to my liking, so I only tried it on and kept it in storage. The current retail price of the ring is ¥63,800.