Hand Etched Crystal Cordial Stemware

 I bought two of these glasses at a second hand store.  One glass is in perfect condition and the other has only two very tiny nicks on the base.  The glasses look like they are hand etched, they make a clear bell sound when tapped with a finger nail, look like they have gold applied, and look like they are hand blown.  Also the stem shines rainbow colors in certain light.

I just added 3 more glasses that I found recently at the same shop.  They are the same etched design accept that there is a ring of gold around the end of the stem and the stem is different.  Also these glasses look like they are hand blown. These glasses measure 3" high and bowl  3" diameter.   All 3 of these glasses are in excellent condition also.

I need to know how much they might be worth and possibly what company made them.

Thank you

jamin