Photo of Star of David etched on a Kiddush Cup (front and bottom) is courtesy of "Esa Einai" who published it on Flickr and wrote to me:
We bought this about 10 years ago at a store in a mall in Buckhead Georgia USA (a suburb of Atlanta Georgia). It is Waterford Crystal. We were shopping for a wedding present for my mom's cousin. We bought her a nice vase and we bought this for our family. It has Borei Pri Hagafen etched in Hebrew; a gold rim. We don't use this very often. Mostly we use my great-grandfather’s little silver Kiddush cup that he brought from the Old Country.