Myuki delica seed bead choker necklace 1.8 mm beads are strung on fine silk cord and lays nicely 18 inch choker necklace and extends up to 20 inches Sterling silver tiny spacer beads South Sea pearls are the most valuable type of pearl. This is due to its scarcity, since they only compose 2% of the world pearl production, and it is very complicated to obtain pearls that reunite the characteristics of nice color, round shape, and good luster. silver plated clasp and extension chain