Terrible. Contrary to their ads, they don't respect you or your jewelry.
I brought in a few rings to sell hoping that they would give me a competitive price. I was immediately told that my jewelry was crap and they estimated its value at a tenth of the price of other area jewelers I visited the same day.
The diamond was certified, however the salesman lied and told me that information on the certification cannot be found online. I told him that you could log into a website to see specifics and he argued saying that it could not be done since its insider information that competitors don't want you to know. I asked him to provide me with the certification number and I immediately pulled it up online, showing him that all of the information was there. He said nothing and offered no apology.
If you are looking to buy or sell jewelry in Tempe, you are better off doing a deal on the street or at a pawn shop.