ISTANBUL Gold prices continue to drop on Monday, after closing last week with a sharp decline following a 10-week upward trend. As of 0700GMT, the ounce price of gold saw $4,535.8 level, down around 6.7% from Friday; it also fell around 11% on Friday. Gold has surged roughly 66% over the past 12 months, whereas this rate was around 90% last week before the recent sell-off. Silver prices also plummeted by some 11.7% to $74.8 per ounce. Its 12-month surge was at 139%, down from 255.6% last week.