- Oligoclase Feldspar
- Cabinet, 9.8 x 7.2 x 5.4 cm
- Plumtree, Spruce Pine District, Avery Co., North Carolina, USA
- Ex. Philadelphia Academy of Natural Sciences
A piece of massive, gemmy feldspar with a pleasing bluish color to it, famously used for carving in old times. It is more historic, then mineralogically interesting, as a sample from NC.