Silver futures rallied on Monday, posting a gain of more than 8% for the session --- the largest daily rise since February 2021, according to Dow Jones Market Data. Gold prices also climbed by almost 2%. "Out of the two metals, silver was the most impressive...as yields fell on the back of [the Bank of England's] temporary bond buying programme and disappointing U.S. ISM manufacturing PMI data," said Fawad Razaqzada, market analyst at City Index and FOREX.com. December silver /zigman2/quotes/210319410/delayed SIZ22 +0.26% rose $1.55, or 8.1%, to settle at $20.589 an ounce, the highest most-active contract finish since August. December gold /zigman2/quotes/210039517/delayed GCZ22 -0.22% added $30, or 1.8%, to settle at $1,702 an ounce, the highest since mid-September.