CANADA STOCKS-TSX turns negative, RIM decline offsets gold rally

TORONTO, Jan 29 (Reuters) - Canada's main stock index turned negative on Tuesday as a decline in Research In Motion Ltd shares, triggered by investor caution ahead of the BlackBerry 10 launch, offset gains made by gold stocks. The Toronto Stock Exchange's S&P/TSX composite index was down 0.73 of a point, or 0.01 percent, at 12,815.18.