The ilvaite is hammer-crafted in irregular form with hand-crafted prong setting. Each piece is distinctly one of a kind. Hammer-crafted Irregular Form Irregular Form Crown Hammer-crafted Irregular Form Black Ilvaite Black Ilvaite with Irregular Prong Setting on Crown Made in Hong Kong Size Guide: EU 51: 51mm in Circumference, JP 11 EU 53: 53mm in Circumference, JP 13 EU 55: 55mm in Circumference, JP 15 EU 57: 57mm in Circumference, JP 17