Precious Enigma Y necklace in 18k white gold and green emeralds. What is so striking about the jewels in this collection is their ability to adapt to any shape, guaranteeing a perfect fit every time. The true enigma lies within its design, a composition of free-moving, diamond-cut elements, joined together using an exclusive and patented technique that allows them to flow and rest on the décolleté with versatile lightness.