I've got a really pretty, clear diamond that appears to be cloudy every few days due to soap scum and other daily wear.  I used to drive out to the mall and just have the jewelry store clean it every two weeks to restore that sparkle and shine.

This product does nearly- so very nearly- as well as the jewelry store cleaning does, but without the annoying trip to the mall.

Scrub with the brush to lather up the gel for about one- two minutes, then rinse under cool water and... DONE!  Like new!

So cheap.  I think I've saved myself the gas money comparison to the price I got this at within the first month!