I have a problem with the Marble in my shower.

I have a problem with the Marble in my shower. Images

I have a problem with the Marble in my shower.

I have a problem with the Marble in my shower. Description

I have a problem with the Marble in my shower. My husband (http://maplered.com) wanted to get the soap scum off from the previous owner's and (http://maplered.com) decided to use CLR! Well, to make a long story short, the CLR took the gloss shine off and (http://maplered.com) now we are trying to find out what to do to restore it. Is there something we can do ourselves or should we call a professional??
 
Laura W Johnson.