Buy 250 gram gold bar - Buy Umicore 250 gram gold bullion bar at very low margins online at Bullion by Post, a leading online gold bullion dealer specialising in gold bars of all sizes from our Umicore 1 gram gold bar to our Umicore 1kg gold bar, as well as several other popular sizes in between such as our Umicore 1 oz gold bar and 100g gold bar.