North Carolina designated the emerald as the official state precious stone in 1973. A greater variety of minerals have been found in NC than in any other state including some of the most valuable and unique gems in the world An emerald crystal thought to be the largest ever found in North America(weight 1869 carats) was found in 2003 near Statesville, NC.A 71-carat stone unearthed at the same location yielded two finished stones - the Carolina Prince and Carolina Queen .
This almond-shaped stone is the largest apple-green diamond known. Its green color is attributed to the crystal’s close contact with a radioactive source at some point in its lifetime. The Dresden Green, which probably originated in a rough crystal of 100 carats or more, is unique among world-famous gems for not only its color, but also its elongated shape.