I bought this product for my fiance as a Christmas Gift, but I gave it to her a little early (selfishly to be able to return it inside of the 30 day return policy if she didn't like it).  The cross is about 1 inch tall and a little less than 1/2 inch across.  The heart in the center on the one I purchased wasn't quite as bright as the picture made it, but she likes it that way so I was all good there.  The box chain is 18" long and of good quality as well.  Altogether beautiful piece of jewelry at a good price, and best of all, she loved it.