Gold on Friday further went down to Rs 23950 per tola and Rs 20528 per 10 grams following a decline of $20.50 per ounce of its world market pries, which was quoted at $862.50 an ounce, traders said. Previously, the yellow metal was being sold at Rs 24500 per tola and Rs 21003 per 10 grams in the local market, but it declined by Rs 550 per tola and Rs 475 per 10 grams respectively.