This is a cute, colon-shaped rose quartz with an onigiri (rice ball) shape. It has silver 925 parts. There is a stamp on the inside of the clasp. I've only worn it a couple of times with my own chain, and it didn't really suit me, so I've kept it stored for about 3 years. I think it's a beautiful item with no noticeable damage. ★ I am also separately listing a silver chain (new and unused) from Shinjuku Gin no Kura, as shown in image 6.