I purchased this at a local jewelry store, but it did not come with a warranty or certificate of quality at the time of purchase. I have a metal allergy and never buy plated accessories. This is a K18WG necklace, as indicated by the hallmark. I fell in love with the adorable butterfly motif and bought it, but I'm not a fan of necklaces with two attachment points... so I haven't had many opportunities to wear it, and I'm putting it up for sale. I've worn it twice since I bought it. There are minor scratches from wear and storage, but no stones are missing. It's a small butterfly motif, but it sparkles beautifully with diamond pavé. Currently, the price of K18 is over 19,000 yen/1g. Considering the long-term outlook, it's expected to continue to increase in value, so it could be a good asset. This is not new and unused, but pre-owned. Please refrain from purchasing if you are concerned about minor details. I hope to pass it on to someone who loves it (*^^*) ※ This will be shipped via Yu-Yu Mercari Bin [Yu-Packet Post]. Please understand. ※ The weight is measured with a kitchen scale, so please consider it as a reference. Total weight...1.73g DIA...0.12ct (0.024g) Chain length...40cm Material...K18WG (18 karat gold) Decoration...Diamond #K18Necklace #K18WG #K18 #DiamondNecklace #Necklace #ButterflyNecklace #18karatGoldNecklace