Spot silver dropped below $79 an ounce Tuesday, with Kitco quoting $78.87 bid, down 0.93%, as a stronger dollar and higher yields pressured precious metals. Silver remains up 14% for the month and over 140% year-on-year, making it vulnerable to profit-taking. Oil prices eased after a Monday spike, while shipping through the Strait of Hormuz stayed limited amid U.S.-Iran tensions. Germany’s ZEW investor morale index fell to minus 17.2 in April.