In Hoogwoud, a city in the Netherlands, a 27-year-old historian named Lorenzo Ruijter struck medieval gold with his metal detector. More specifically, he found four crescent-moon-shaped gold pendant earrings, two gold leaf pieces that fit together, and thirty-nine small, precious silver coins, all from the Middle Ages, the Dutch National Museum of Antiquities announced. The museum dates the gold treasure back to roughly A.D. 1050. Ruijter has been metal detecting for most of his life and now it's paid off big time. "It was very special discovering something this valuable, I can't really describe it. I never expected to discover...