Would there possibly be a way I could specify the width for a gravatar img instead of just :size => x
<%= gravatar_for user, :size => 125, :class => "indexlist" %>
No. To confirm this, take a look here: http://en.gravatar.com/site/implement/images/
Size
By default, images are presented at 80px by 80px if no size parameter is supplied. You may request a specific image size, which will be dynamically delivered from Gravatar by using the s= or size= parameter and passing a single pixel dimension (since the images are square).
Only the size (s) parameter is exposed by their API.
http://www.gravatar.com/avatar/296f29c92c1561c79e034df64dc19f56?s=128