Gold prices hit a six-year low on Tuesday at $1073 per ounce as markets ar still recovering from the effects of the terrorist attacks in Paris.Following a 1.3 percent hike on Monday with investors shifting to gold after Paris attacks, gold gave away its gains on Tuesday.The decrease of gold prices was also due to a shift of to the U.S. dollar by investors with expectations of a soon rate hike by the U.S. Federal Reserve (Fed). The U.S inflation data to be released later today will be a key determinant whether the Fed will increase interest rates in the short term.