TiSento Milano Collection 18ct Yellow Gold Plated Chain Necklace With A Silver J Lock Clasp. This TI SENTO - Milano gold-plated chain necklace 34030SY/40 is a timeless and minimalistic piece. Crafted from the highest quality 925 sterling silver, the necklace is plated with 18k yellow gold. This basic chain necklace has a sophisticated J lock. This refined vintage piece is guaranteed to become your next jewellery staple. All of our necklaces are nickel-free and hypoallergenic.