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
Visual arts by indigenous peoples of the Americas fully beaded regalia. The antique Venetian beads she uses can as small as size 22°, about the size of a grain of salt. Juanita Growing Thunder Fogarty, Rhonda Holy Bear, and Charlene Holy Bear are also prominent beaded dollmakers. The widespread popularity of glass beads does not mean aboriginal bead making is dead. Perhaps the most famous Native bead is wampum, a cylindrical tube of quahog or whelk shell. Both shells produce white beads, but only parts of the quahog produce purple. These are ceremonially and politically important to a range of Northeastern Woodland tribes. Elizabeth James Perry (Aquinnah Wampanoag-Eastern