Tahitian Keshi Pearl Stud Earrings

Large Tahitian Keshi Pearls in 9 carat yellow gold setting.  8-10mm pearls.
 
Keshi can occur as a by-product of culturing another pearl, or completely naturally - it's impossible to tell the difference. Unlike  'cultured' pearls, Keshi do not have a nucleus and are instead 100% nacre so have a very high lustre. There is usually a large degree of variance in the shape of keshi pearls.