This is an alloy accessory, not made of precious metals. The stones are likely ordinary plastic, not diamonds or zirconia. The accessory is quite well-made and very beautiful. The chain, in particular, is smooth and has a luxurious feel. The length is approximately 72cm. It's a slip-on type, without a clasp. The top is 2cm long (including the bail) and 1.5cm wide. Both the base and the bail have a heart motif, making it cute. I think it's an easy-to-enjoy accessory. Chain + Top: 8.2g #SilverColor #LongNecklace #Heart