North Carolina has many important deposits of minerals throughout the state. North Carolina is one of the nations leaders in production of Feldspar, Lithium Minerals, Scrap Mica, Olivine, and pyrophylitte. Also NC ranks second in phosphate rock production and in the top 5 in clay and crushed granite production. The official precious stone of NC is the Emerald. Emerald is found near Alexander county in fact the largest Emerald ever found in North America was found here in 1969. The state rock of NC is Granite. Here in Nc they have a very significant amount of Granite and they certainly put it to use. The largest granite quarry in NC is located in Mount Airy. Granite is used in road construction as well as buildings.