At the time this problem was written, the price of gold was $411 per ounce, while that of platinum was $884 an ounce. The "ounce" in this case is the troy ounce, which is equal to 31.1035 g . (The more familiar avoirdupois ounce is equal to 28.35 g.) The density of gold is 19.3 g/cm3 and that of platinum is 21.4 g/cm3. If you find a spherical gold nugget worth 1.00 million dollars, what would be its diameter?.