Domestic gold prices have rallied to all-time highs on the back of recent surges in international prices of the precious metal and the weak U.S. dollar, industry sources said Friday. The retail price of 1 don (3.75 grams) of pure gold in the country stood at 217,200 won (US$205) on Thursday, after breaking the 200,000-won mark in June last year, according to the Korea Gold Exchange, a local gold dealer. Don is a unit used in Korea to measure gold.