Dura Tungsten 8.3mm Black Polished Comfort Fit Wedding Band Ring. Made to last a lifetime, Tungsten jewelry is a natural choice for those who want a resilient metal that shows little signs of wear. Very brilliant due to its tough and enduring qualities, Tungsten is a heavy metal and as a pure element it is hypoallergenic. Brand: Chisel Design: Plain/Engravable Style: Bands & Sets Occasion: Wedding Resizable: No Adjustable: No Size/Dimensions: 7 Gift Box: Gift Bag