At least, I *think* it's a parfait glass. All I know is that this 3-3/4-inch tall cutie was 99 cents at Goodwill on Saturday, and I loved it and found myself wishing, not for the first time, that you could "order" things from Goodwill as if it were Amazon.com.
I have not mastered the art of photographing etched glass, but I hope you can see the ribbed stripe on this stretch of the glass.
And I plopped a napkin in here so you can see that the design really does stand out in real life. I think if you love teacups and teapots and teawares, collecting glassware almost naturally becomes a secondary passion. I am going to be on the lookout for more of these petite little glasses. I saw similar-sized pieces listed on eBay as "parfait glasses," so I'm going with that unless I learn otherwise. Now I need about five more and I can make mini-trifles in time for a holiday tea!