The EQUINOX-6MM from our ETERNAL BOND collection is a Black 6mm Tungsten Carbide Domed Wedding Band Ring Imagine wearing a ring that never needs polishing, a ring that is virtually scratch proof. Tungsten carbide rings are the future. With rugged looks and a modern design our Tungsten carbide rings are prefect as a wedding band or as a fashion accessory. Tungsten carbide is 4 times harder than titanium. Rated between 8 and 9 on the Mohs scale the hardest of which is diamond being rated a 10. Completely hypoallergenic our tungsten carbide rings will never turn your finger green or cause irritation to your skin. If you need a durable yet elegant ring this is for you. Brand: Eternal Bond Design: Plain/Engravable Style: Bands & Sets Occasion: Wedding Resizable: No Adjustable: No Size/Dimensions: 6 Gift Box: Gift Bag