10.5 DWT Natural gold nugget from Alaska Jewelry. A natural gold nugget weighing over 1 DWT (1/20th of an ounce) is a collectors piece. 99% of gold found today is significantly smaller than a grain of rice. For perspective, a 1 ounce nugget is as rare as a flawless 5 carat diamond. This nugget is real, not mad made, 100% natural, and of Alaskan origin.