MALDITO | Red Ring, Black Tungsten Ring, Blue Offset Groove, FlatMALDITO Tungsten Black Brushed Ring with Blue Offset Groove and Red Inside Ring 6MM, 8MM Our rings are made of tungsten carbide because it's twice as hard as steel and is much more scratch resistant. Our blue groove ring is designed for people who want a unique ring with a unique color. It's made of black tungsten and has a red anodized aluminum interior. We offer a Lifetime Replacement and Sizing Warranty on all our rings. Our jewelry is made from