I have a painting that has paris etching society ny usa at the top and I believe the name is Diane Emmla Leconte. Can you tell me if she is a artist and if so how much is the painting worth?

That name does not ring a bell. However, there are a few artist that come to mind that you could possibly be confusing their hand writing with and they are, Paul Emile LeComte or Pierre LeConte .
Do you happen to know the name of the painting? If not, is there a copyright date? What is the painting of (such as, landscape or a vase of flowers)?
Any details will help at figuring out who it's by and how much it is worth.