Granite Walls

I just remodeled my bathroom with a granite countertop slab and 12x12 granite squares on the walls. The color is black galaxy which looks great yet gets dirty easy.
What would be the best way to clean them? I want the granite to sparkle.
Thanks in advance for the advice !!
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

HomeOwnersHub.com is a website for homeowners and building and maintenance pros. It is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.