Native americans method of dating
Some turquoise mines date back to Precolumbian times, and Ancestral Pueblo peoples traded the turquoise with Mesoamericans.
Some turquoise found in southern Arizona dates back to 200 BCE.
Native American tribes continue to develop distinct aesthetics rooted in their personal artistic visions and cultural traditions.The Lakota became particularly adept at glass bead work, especially the members of the Standing Rock Sioux Tribe in the Western Dakotas.Several award-winning quillworkers are active in the art world today, such as Juanita Growing Thunder Fogarty (Assiniboine-Sioux).Contemporary Native American jewelry ranges from hand-quarried and processed stones and shells to computer-fabricated steel and titanium jewelry. The earliest known examples of jewelry North American are four bone earrings founded at the Mead Site, near Fairbanks, Alaska that date back 12,000 years.
Olivella shell beads, dating from 6000 BCE, were found in Nevada; bone, antler, and possibly marine shell beads from 7000 BCE were found in Russell Cave in Alabama; copper jewelry was traded from Lake Superior beginning in 3000 BCE; and stone beads were carved in Poverty Point in Louisiana in 1500 BCE.Metal jewelry came to the Plains through Spanish and Mexican metalsmiths and trade with tribes from other regions.