Joy Hawkins posted on Twitter that she saw stars in the location extensions part of a Google AdWords ad. Honestly, I have not seen one of these in years and I personally cannot replicate it, but I do trust her.
She shared this screen shot:
Are you able to replicate this? I personally tried tons of variations around this query in multiple browsers without luck.
Of course, whenever there are stars in the search results, they do stand out more.
Forum discussion at Twitter.