It's a Judith Jack piece. It appears to be a much older piece with the JJ logo in a diamond shape mark but can't be any older that the early 70's. It weighs just over 25 grams. It feels very substantial in my hand - it's exceedingly well made. It has the standard slip in clasp with a fold over safety clasp. The clasp is secure and tight. It measures just a tad over 7.5 inches long opened end to end. There are 4 tiny marcasite stones missing. Generally I would repair an item like this however these are very tiny stones that I do not have. Personally I don't feel it is a significant problem but I need to mention them. It has great patina and I will leave that alone as well. This item is being sold as is so please read the entire description.