Shell money most valued by the Native American tribes of the Pacific Coast from Alaska to northwest California was "Dentalium shell", a species of long narrow marine shelled mollusk, a tusk shell or scaphopod. The tusk shell is naturally open at both ends, and can easily be strung on a thread. This shell money was valued by its length rather than the exact number of shells; the "ligua", the highest denomination in their currency, was a length of about 6 inches. Farther south, in central California and southern California, the shell of the olive snail "Olivella biplicata" was used to make beads
Native American jewelry the purple beads from quahog clamshells. Wampum workshops were located among the Narragansett tribe, an Algonquian people located along the southern New England coast. The Narragansett tribal bead makers were buried with wampum supplies and tools to finish work in progress in the afterlife. Wampum was highly sought as a trade good throughout the Eastern Woodlands, including the Great Lakes region. Narragansett favored teardrop-shaped shell pendants, and the claw pendants made of purple shell were worn by Iroquois in the Hudson Valley, around the Connecticut River. The Seneca and Munsee made shell pendants with drilled columns, decorated with a circular