Most freshwater pearls are nucleated by tissue, but Edison cultured pearls are nucleated with beads, exactly as saltwater pearls This necklace contains Edison Pearls which were chosen for their bright luster that can be compared with that of high-end saltwater pearls, and for their vibrant grey colour. The pearls measure 8x10mm in diameter. The necklace is strung by hand with knots between each pearl for safety and is completed with an elegant magnetic ball clasp in solid silver. At the standard length of 46cm , the necklace sits under the collarbone. Packaging: Necklace Jewellery box and an Authenticity Certificate to guarantee the source and quality of the pearls. Insured track and trace delivery.