How much is my diamond worth?

I have a 1 ct diamond, Its off of an engagement ring. It could be bigger than 1 ct but im not too sure. How much is a Loose diamond off of an engagement ring worth thats greater than or equal to 1ct?|||There is absolutely no way for anyone who isn't a jeweler with a weight scale and a jeweler's loupe (magnifying device) could tell you the worth of your diamond. You will have to take it to a jeweler to have it evaluated. Sorry...|||Yep... only a jeweler can tell the difference.