⚫︎ This ring is a K18 chain ring. ⚫︎ It has a K18 hallmark. I've included the hallmark in the 14th and 15th photos, but you can see it if you look closely. ⚫︎ It weighed 2g on a kitchen scale. The kitchen scale measures in 1g increments, so there may be some error. This is just an estimate. The size is about a size 9. It stops at the size 11 mark on a ring sizer, but because it's a chain, I think it's about a size 9... The chain design sparkles. ⚫︎ Purchased from a jewelry shop and used a few times for a short period, so it's close to new, but not brand new. Please understand this before purchasing. Purchased 3 months ago. Thank you. It will be shipped in a pouch I have at home via Takkyubin Compact. Please note that returns and holds are not accepted.