From the Calla the One Collection Vhernier's slim Calla ring is crafted of 18K rose gold. This sculptural piece showcases the label's signature conical design with a gleaming polished finish. 18K rose gold Made in Italy SIZE Width, about 0.25". Fine Jewelry - Designer Jewelry A > Vhernier > Saks Fifth Avenue > Barneys. Vhernier. Color: Rose Gold. Size: 6.