Up for auction is this mikimoto pearl necklace.  The necklace is 18" long.  The pearls are gradual.  For details please view pictures.   This necklace is in very good pre-owned condition.  The pearls are tight on the string and have a slight rainbow luster to them.  I don't have the tool that measures the circumference of a circle but when putting a tape across the largest pearl at the bottom it appears to be 1 cm across.  I do not have the box unfortunately.  Shipping will be priority mail with insurance.  If you have any questions please feel free to ask.  Thank you for looking!