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
Buddhist prayer beads In later years, various Buddhist sects would either retain the number of beads, or divide them into consecutive twos, fours, for brevity or informality. A decorative tassel is sometimes attached to the beads, flanked by talismans or amulets depending on one's local tradition. Because prayer beads are often painted in pigment, various traditional schools attribute a consecration ritual by the Sangha to the beads, to "open the eyes" for the purpose of achieving Enlightenment unique to the Karma of each believer. Malas are used for keeping count while reciting, chanting, or mentally repeating a mantra or the name or names