Aconcho orconcha is a typically oval silver ornament found inNative American art. Conchos are most closely associated with theNavajo people, with one of the best known forms being theconcho belt.

Conchos were first made by eastern tribes such as theDelaware andShawnee, whose craftsmen learned their trade from European artisans. Following their resettlement in Oklahoma in the 1830s, they passed the art form on toPlains tribes including theComanche,Kiowa andUte, who in turn introduced it to the Navajo of the Southwest. The Navajo later began making conchos around the 1870s to 1880s, after they had learned the craft of silversmithing from Rio Grande Mexican peoples. The nameconcho comes fromconcha, the Spanish word for 'seashell'.^[1][2][3]