Vintage Mikimoto Pearl necklace for sale $1800 O.B.O. Appraised at over $2000. One 14.0” single strand unknotted pearl necklace containing 58 akoya cultured pearls, 6.5mm to 6.0mm in size with a 67% Silver clasp. The pearls are white in color, rose overtone with a very good luster, round, and lightly blemished with very good matching. (One pearl is 3.68mm on the clasp).One 14.0" single strand unknotted pearl necklace containing 58 akoya cultured pearls, 6.5mm to 6.0mm in size with a 67% Silver clasp. The pearls are white in color, rose overtone with a very good luster, round, and lightly blemished with very good matching. (One pearl is 3.68mm on the clasp).