Signet Jewelers Limited (NYSE:SIG) is one of the stocks Jim Cramer put under the microscope. Cramer highlighted why he thinks the stock might be overvalued. He commented: Gold itself doesn’t impact much more than the cost of jewelry. Silver’s way up, and that has some industrial uses, but not anything that will result in a material hit to any major company’s earnings. Now, look, both may hurt the earnings of Signet Jewelers, owner of Kay, Zales, and Jared. We have them all the time. Signet’s stock might b ...