There is a lot of variation going on within these strands and within the bundle of pearls. If you like these, you might want to call us and have a chat. The pearls range in length from 15 mm to 20 mm, but are fairly well matched within each strand. So, some strands feature more petite pearls and others feature longer pearls. The width of the pearl also varies from 6 mm to 4 mm. Each strand is 16 inches long and how many are on each strand depends on the length of the pearls.