Keshi are the rarest baroque pearls and happen when the mollusk rejects the seed but continues to develop the pearl, so they do not have a center particle. They are elongated and extraordinarily lustrous.
The word Keshi comes from keshinomi, meaning “poppy seed” in Japanese. They are solid-nacre, usually small in size. Nowadays, Keshis have become highly collectible pearls in their own right due to their unique shapes and high rate of iridescence.