A token jewel in the window is a tantalising hint of the custom jewellery this versatile goldsmiths’ atelier can create for you, with original designs that nod at Venice’s seafaring, Byzantine past: a nautilus-inspired ring inset with opal and turquoise mosaic, a square gold bracelet inlaid with ebony, a necklace of Murano glass seascapes that float on the collarbone like islands.