Sterling Silver cubic zirconia ring Solitaire w/ 2 square diamonds on each side

I took the ring to a jewelry store bc I did not know if it was real. I was told the band was sterling silver and the diamonds are cubic. I did not pay for an appraisal. The clerk gave me a price estimate based on what Pandora CZ rings are selling for. The Size is just slightly larger than an 8 about 8 1/4. I can include the Zales case, however the ring did not come from Zales.