Help me with a new one please. Don't copy existing answers from Chegg.

On February 10, Mrs. Sunderhaus purchased a diamond ring from Perel & Lowenstein for $6,990. She was told by the company's salesman that the ring was worth its purchase price, and she also received at that time a written guarantee from the company attesting to the diamond's value, style, and trade-in value. When Mrs. Sunderhaus went to trade the ring for another, however, she was told by two jewelers that the ring was valued at $3,000 and $3,500, respectively. Mrs. Sunderhaus knew little about the value of diamonds and claims to have relied on the oral representation of the Perel & Lowenstein's salesman and the written representation as to the ring's value. She seeks rescission of the contract or damages in the amount of the sales price over the ring's value. Decision?