Rarely Seen in Mexico. This is a gorgeous, huge and very rare museum grade natural gold in quartz specimen from the Sonora State. A very rare location for a specimen of this size. It weighs 29.61 troy ounces (920.9 Grams) and it has 10.9 troy ounces (338.9 Grams) of contained gold. It measures 4.5" (11.5 cm) wide x 3.75" (9.5 cm) high x 2" (5 cm) thick. The gold is all a wonderful crystalline gold and it has wonderful and unique shapes and formations. You can see some rare gold crystals among the crystalline gold, along with leaf gold and wire gold. A particularly rare and spectacular find! The gold has a wonderful buttery golden color and is very pure. From the color of the gold I estimate the purity at 22KT to 23KT (92% to 98% pure). It was found in Northern Senora State in Mexico, near the town of Caborca, by a rancher/gold prospector (known as a "Gambusino" in Mexico) using a Minelab metal detector. It was found in the same general area that the famous 389 troy ounce "Boot of Cortez" nugget was found.