New Delhi, 22/4: Gold prices surged by Rs 1,800 to zoom past the crucial Rs 1 lakh-mark for 10 grams in the national capital on Tuesday amid buying rush by local jewellers and stockists in anticipation of increased demand during Akshaya Tritiya and weddings season even as global macroeconomic uncertainties continued to fuel safe-haven chase.According to the All India Sarafa Association, the precious metal of 99.9 per cent purity climbed Rs 1,800 to hit the lifetime peak of Rs 1,01,600 per 10 grams from Monday’s closing level of Rs 99,800 per 10 grams.