Google is now displaying rich snippets via product schema markup in the Google Image Search results. If you do a Google image search on a smartphone and click on a result that is product-related, it may show the rich snippets
In addition, Google just updated the product schema developer documents to add that it now supports image search results. The image search mentioned in this text was not there a few days ago:
Add markup to your product pages so Google can provide detailed product information in rich Search results — including Image Search. Users can see price, availability, and review ratings right on Search results.
