Thank you for your interest in our product. Please read the following before making a purchase. [Product Description] TIFFANY&Co. Tiffany 0.37ct Pt950 Harmony Circle Diamond Ring glr A stately 0.37ct! As expected of Tiffany, a very beautiful diamond ✨ * The Tiffany blue box in the image is also included. ** Offered at a lower price because there is no certificate of authenticity. Pt950 2.4g D...0.37ct Box Size 5 (Japanese size) Serial number...37139904 [Condition of the product] Condition: Newly finished [Follower Special Offers] Thank you for reading to the end. We have prepared the following benefits for those who follow our store. [5% OFF] If you post a comment requesting a price reduction with "I followed," we will offer a 5% discount on the product price for followers only. Please be sure to request this before purchasing. We cannot offer a discount after purchase. [Size adjustment available!] Size adjustment is possible before delivery. The basic fee is 3500 yen, and it costs 1000 yen for each size increase. [Free gift wrapping] Also, for followers only, we offer free gift wrapping for those who wish, although it is modest. [Other] Our company is a used goods market certified by the AACD (Association Against Counterfeit Goods) and the ATF (All Japan Pawnshop Brand Goods Association). In addition, the authentication process is cleared through three stages: a purchasing company → an auction company → our company, so it is 100% authentic, so please rest assured. Also, the items are disinfected, sterilized, and finished, so we deliver them to our customers with peace of mind. Please feel free to ask any other questions. Model name...Harmony Size...Size 5 Material...Platinum Accessories...Box