Silvery satin Tahitian Pearls are set with a Padparadscha Sapphire on one and a White Sapphire on the other. Being asymmetrical is so "in". You can buy this clasp as is or you could send me your necklace and I would restring it for a nominal fee. This is an ideal way to make a modern necklace out of an unworn too classic pearl necklace. This clasp would work on a number of other necklaces, as well. Call and we'll talk.
The second photo is of some 8.5mm Akoya pearls next to the clasp to give you an idea of how this might look in your necklace. Sorry the Akoya pearls are not included.