What kind of pearls are these?

[Missladiev]

Is anyone able to tell me who the maker of these pearls are or what kind they are? The clasp has the manufacturer info of 14K585 and the clasp info is below. I have tried Google Image Search but nothing came up. I believe the symbol is good luck. The pearls seem to be iridescent and compared to fake ones appeared more white. The last picture below shows them on the bottom. They were my grandmothers and she was born in 1916. Thank you.