Lot of 2 10 gram Istanbul Gold Refinery (IGR) Bar. 9999 Fine (In Assay) January 16, 2024 / By admin / In gram This bar, expertly minted by IGR, is a symbol of purity and excellence in gold refining. Containing 10 grams of. 9999 fine gold, it is a perfect choice for both investors and collectors looking for high-quality gold products.