NEW YORK/LONDON, Feb 28 (Reuters) - Gold prices rose 1 percent toward $1,800 an ounce on Tuesday on an expected injection of cheap money from the European Central Bank, while silver rallied 4 percent after it breached key technical resistance.

Silver hit a five-month high and its rally quickened pace after it broke above recent highs near $35.70, a major channel-top resistance that had held several times since September.

[...]