This incredible Costa Rica gold nugget is very smooth and gorgeous. Check out the buttery gold color. Investment/jewelry grade gold nuggets from Costa Rica are about 92% to 98% pure gold, some of the purest natural gold nuggets in the world. My contact in Costa Rica buys them directly from the prospectors. he hand selected the best ones for me and sent the rest to a refiner to melt. This amazing gold specimen weighs in at 7.82 Grams (120.7 Grains). The size of this beauty is 3/4" (19 mm) long. It is smooth and gorgeous and would make a great jewelry piece of an awesome addition to your gold nugget collection.