Thorsten Rings YUKON Black Ceramic Wedding Ring with Walnut Wood Inlay and Polished Beveled Edges Comfort Fit Lightweight Durable Wooden Wedding Band - 10mm Hypoallergenic, Durable and Heat Resistant Black Ceramic Comfort Fit Great For Both Men & Women - Also Available in 8mm and 10mm widths Great Wedding Ring or Promise Ring Free Shipping, Free Lifetime Warranty, Free Lifetime Sizing Walnut Wood is a Fine-Grained Hardwood Rich in Color, Finishes Well, Dense and Shock Resistant.