Let me qualify the following with a caution: It isn't possible to positively identify a pearl from just a picture. With that in mind... they appear to be fairly high quality Akoya saltwater pearls. What size are they? I'm guessing they are around 7.5mm? The clasp is 14k gold, and they are well finished with gold wrap around the end knots. They appear to have a slight rose overtone and good luster.
It is impossible to know for sure the pearl type from just the picture though. We sell freshwater pearls that are nearly indistinguishable from Akoya pearls. I'd recommend trying to look down the drill hole and see if you can see a mother-of-pearl bead nucleus. If there is a bead nucleus, it is probably an Akoya.
Without any further information to go on, don't forget to tooth-test them to make sure they aren't faux pearls. I doubt they are since they are paired with a 14k gold clasp, but still...