Gold prices on Friday grew to Rs 84100 per tola up by Rs 700 on the local market, traders said. They said that the gold prices on the world market also mounted to $1438 an ounce, which drew the value of yellow metal on the local market to Rs 72085 per 10 grams, up by Rs 600. Silver is selling for Rs 920 per tola, 10 grams Rs 788.57 while it is traded for $16.33 an ounce on the global market, according to the traders.