Beautiful crystal wine glasses, help with make or time period

Found this set of cut crystal wine glasses in an estate sale and I cannot find anything like them, I’ve looked in replacements for Waterford patterns and also came up short. Any help with origin or the time frame when they were made would be of amazing help. They are 7” inches tall. Thanks guys!

 

Looks like it is imitating Waterford. The picture of the bottom shows a seam running through the glass from 9:00 o'clock to 3 o'clock. Waterford would not have this. The stem is not a Waterford shape either. If you "ping" the rim is there a clear tone that resonates......or a dull thud.
Time frame will be difficult on these, but I'm thinking the last quarter of the 20th century.

 

Much of Waterford is also etch marked on the bottom.

 

Are you sure they are cut and not pressed? Looking at the bottom the edges of the star look rounded over to me. If they were cut the edges would be sharp.

Maybe I'm not seeing it clearly?

 

They seem sharp to me, but wouldn’t the top part be more thick and not so delicate if it was pressed glass?