14k Yellow Gold Necklace with Natural White Diamonds The Pillar Collection began with an ancient Roman gold ring dating somewhere between the 2nd and 5th century CE that we couldn't stop thinking about. Instead of recreating it, we borrowed the carved textures, the architecture, and the warmth of the gold and let them guide the collection from there. The Diamond Pillar Necklace gave us a chance to see the collection in a new shape. The carved textures follow a soft V silhouette, with diamonds nestled between ridges of gold along the way.