Displaying 'new' Icon Based On Date?

I'd like to display a little "new" icon next to all products in a directory which are, funnily enough, new! I've got a date (timestamp) for each product which is inserted on adding a new product and updating a product.

I'd like to do a conditional region using the timestamo but I'm not sure what to use - I could do === [current date] but that would only show the icon for that day and I'd like it to be there for about a week or so.