K18 Pt900 Ruby Ring Combination This ring was purchased around 1991-1992 at Kawasaki Marui. It features a combination design of K18 (18 karat gold) and Pt900 (platinum), with a small ruby set on the front. The inside of the ring is stamped with "K18" and "Pt900". It has a streamlined platinum top and a stepped gold design, typical of department store jewelry from the 1990s. *No appraisal certificate* ・Size: 7 ・Metal: K18 (18 karat gold) & Pt900 (platinum) ・Gemstone: Ruby (no carat stamp due to its small size) ・Weight: Approximately 3g (Slight variations may occur due to the use of a household scale. Please consider this as a reference only.) ・Accessories: Ring only ・The 50-yen coin in the photo is for comparison and is not included. ・The display stand in the photo is not included. ・Condition: Shows overall signs of use. ***The price is determined by considering the acquisition method, Mercari fees, shipping costs, and profit, and is not solely based on the gold market price.*** We do not accept returns for being too expensive or too cheap after purchase, so please purchase only if you are satisfied. This item has been authenticated and appraised by a buyer, and a reasonable estimated price has been provided. Also, I am a non-smoker, so there is no smell or dirt from cigarettes. Stored at home, no dogs or cats. Please refrain from purchasing if you are looking for a product in perfect, like-new condition, or if you are overly sensitive. Returns are not accepted to prevent product substitution. ***No price reduction due to shipping costs being covered.***