'The 139 carat El Sol Rosa Pink Emerald could be the most important emerald in the world. To create a setting worthy of this gem, Miriam Marta was commissioned to design a rare one-of-a-kind jewel. Master jeweler Alvin Ho was given the assignment to hand-set 346 Pink Sapphires and 433 Diamonds (12.47 carats in total) in 18K rose gold.