This is a 16" strand of freshwater pearls .  The large baroque style pearls average 11.5 to 12.5 mm in size. 

They are fine jewelry quality freshwater pearls, with a great sheen and soft luster in cream.

The clasp is a goldtone floral piece with a round pearl in the center. 

It's a little difficult to measure this type of pearl so this is the average of the sizes.

Hand strung on silk in the USA.