Engraving... Pt900, 1.0 (carat of the blue topaz) Material... Platinum, Blue Topaz Weight... Approximately 2.8g Size... Slightly under size 13 This is a ring with a bright blue topaz. I bought it as a size 13, but it seems a little small on the ring sizer, so I think it's about size 12.7. It's in beautiful condition because I stored it without using it much. ⭐︎Instant purchase OK ⭐︎No price reduction