The preceding lengths are approximate. Definitions of necklace-length terms can vary from one jeweler to another. Keep in mind that pearl strands become slightly longer (about 2 inches or 5 cm) when knotted and strung with a clasp to form a necklace. The following table will help you determine approximately how many pearls there are in a 14" and 16" strand. Table 3 (Based on data from the Shima Pearl Co.)