6mm, 8mm, and 9mm Potato Pearls
The 1st Strand of this necklace uses 6mm pearls and is about 18", the 2nd Strand is about 21", and the 3rd Strand is about 25".
COOL ADDITION: The 1st strand of pearls can be separated from the rest of the necklace to be worn alone as a single strand of 6mm pearls.
*NOTE: I use the word "about" because Freshwater Pearls are not perfectly round and therefore the measurement might shift a little.
The closure has about a 3" chain so there is plenty of room to adjust the size as needed.