Three Keys Jewelry 3mm Blue Ceramic Ring Wedding Engagement Band Comfort Fit Dome Polished Ring Material: Blue Ceramic & No Metal Irritation & Scratch Resistant Ring Width: 3mm; Ring Thickness: 1.8mm; Comfort Fit; Free Gift Package: Charming and Elegant Ring Box Printed Three Keys Jewelry; Craft: Blue Ceramic & Dome & Comfort Fit; Perfect as a wedding band, engagement ring or just for everyday wear