Gold prices bounced back to hit an all-time high at the bullion market in Mumbai today on heavy stockists and speculative buying and global cues. Standard gold (99.5 purity) shot up by 460 rupees per ten grams to finish at a new peak of 18,795 rupees. Pure gold (99.9 purity) also zoomed by a similar margin to touch a historic high of 18,885 rupees