Today, North American Emerald Mines operates a small mine near Hiddenite, North Carolina. Between 1995 and 2010, over 20,000 carats of emeralds had been produced, including a six-inch-long, 1,869-carat crystal that is now in the Houston Museum of Natural Science and valued at $3.5 million. A crushed stone quarry on the same property is operated with an eye open for signs of the hydro-thermal veins and pockets that sometimes contain emerald. It is one of the only gemstone mines in the world that sells the country rock. The Emerald Hollow Mine is the only emerald mine in the United States open to the public for prospecting. Nestled snugly in the foothills of the beautiful Brushy Mountains, this North Carolina Emerald mine is located in the small town of Hiddenite, North Carolina. This locality is recognized as one of the most unique and interesting geological locations on the North American continent.