Hi Moana,
Do you have a gauge to measure the pearls? How long is the strand? The size of the pearls helps to determine what they could be. Same with the pearl in the ring. Is the clasp on the necklace and ring itself 14k or 18k? The pearls in the necklace look quite smooth, do any have a light circled band around any of the pearls? Were they recent gifts, or have they been in someone's family a long time?
They both are very attractive pieces! Lucky you!
Pattye