I purchased this at a department store. I haven't used it much, and it has been stored at home. The charms are all removable, so you can attach them as you like. Size (measured by a layman): Neck circumference: 45cm (including the adjuster) Heart charm: 1.5cm long, 1.2cm wide Key charm: 1.8cm long, 0.8cm wide Rose charm: 0.7cm long, 0.6cm wide The material is SV925. There is some tarnish due to it being a silver product. I will wipe it with a silver polishing cloth before sending it, but if you are concerned, please take care of it yourself after purchase. I will ship it with the original case and outer box. I plan to wrap it in cushioning material for shipping. Please consider this item, understanding that it is a used item that has been used and stored by an individual.