Natural salt water pearl chocker

A double-row natural saltwater pearl necklace, comprising two strands of off-round pearls, with an average of 3.7mm in diameter, hand knotted and completed with a square box clasp grain-set with twenty-five graduating old-cut diamonds, the clasp in yellow metal surface testing as 18ct, the necklace measuring 37 cm in length, 13.5 grams.

Together with a report from The Gem & Pearl Laboratory which states the pearls are natural saltwater.