Set the dish or glass on a table.....and gently strike it with your flicked finger or a gentle blow form a pencil. If it rings like a bell it contains lead....the longer the tone continues, the greater the lead content.
If it's cut it must be lead glass....non lead glass is too brittle to cut. Real cut glass it sharp....you can tell by the edges of the design if it's been cut or molded.
However the problem comes when some glass waas molded with "cut-like" patterns and then the designs were embellished with actually cutting.
How about pictures of what you are questioning?
Linda C

I don't agree with everything this woman says, but she shows some wonderful glass.....and how to recognize the bell tone of lead crystal.

Here is a link that might be useful: Collecting flint glass