The pendant top is stamped SV925. The stone appears to be artificial, such as zirconia. The cross is approximately 16mm long and 14mm wide. The chain is approximately 40cm long at its longest and is stamped 925. It has been stored at home. There may be some remaining dirt or stickiness that I haven't been able to remove completely. Please refrain from purchasing if you are concerned. (No pets, no smokers) We appreciate your consideration, understanding that this is a used item. The color may differ slightly between the image and the actual product. Please note that recycled packaging materials may be used.