THE ROMAN COLLECTION Our new take on a classic, the Lucy Williams Caesar Coin Necklace incorporates ancient iconography into contemporary jewelry. The Lucy Williams Square Malachite Necklace and Flat Curb Chain Necklace meet our best selling Lucy Williams Roman Arc Coin Necklace. This trio of icons. The must-have coin pendants from the Lucy Williams x Missoma Roman collection are the bold finishing touch to your necklace layers. Wear solo or add to.