100g Gold Bar – pure 24 carat (999.9) gold. Buy 100-gram pure gold bullion bar. Our 100g gold bar has a purity of 99.99%. All our Gold Bars are pure 24 carat gold, brand new and manufactured by LBMA approved refiners including Umicore, Metalor & Heraeus. Gold price – live and track changes in the underlying spot prices of the metals at 20-second intervals so you can be sure you are always getting the latest pricing on every gold bullion order.