Thank you for viewing. ヵ85 Platinum base. Diamond necklace. This is a used item. There are scratches and minor imperfections due to use. Please consider this item if you understand used jewelry. Small diamonds, ten in total, are designed around a blue gemstone. (This is an amateur guess. I'm guessing it's a sapphire based on the blue gemstone. I apologize if I'm mistaken.) This item is from Daimaru Department Store. Chain material: Platinum 850. (Japanese flag, Japan Mint mark.) Chain length: Approximately 40 cm. (Extended by 35 mm.) On the back of the platinum base of the top, there are markings "100" and "033". On the bail (round ring) of the top, there is a "Pt900" marking. Top size: Length 11 mm. Width 9 mm. Diamond diameter: Slightly less than 2 mm. Size of the central blue gemstone: 5 mm x 7 mm. Weight: Total weight: 3.5 grams ~ 3.6 grams. I have other gold and platinum items for sale. 2020 4/23