Custom Jewelry 10mm Black Tungsten Carbide Ring, One(1) USMC Marine Eagle Globe & Anchor Image (full & half sizes 5-15) Black Tungsten BandTungsten is one of the hardest elements on earth and is ideal for applying a strong, black metal to create a perfectly black ring. The black can scratch over time so if you are looking EGAA high-powered laser is used to engraved through the black metal and show the natural tungsten below. The engraving is permanent. Available In Full and Half Sizes 5-15 Safe to WearTungsten is not only the strongest metal to wear but it is also the safest. In the event of an emergency this ring can gently be broken off using constant pressure from vice grips without inflicting any damage to the finger. Your Satisfaction GuaranteedYou have 30 days from your purchase date to return your ring for a full refund.