Large natural gold nugget found in Arizona, 152.55 grams, 95% fine. 152.55 grams. roughly 1-3/8" x 1-1/4" x 7/8". A mostly smooth ball of solid gold with about 40% of the surface punctuated with red-crusted natural pits, very dense and attractively shaped, the glossy surfaces indicative of eons of rolling around riverbeds.