Tungsten rings are made from tungsten carbide, an extremely hard and durable material. Tungsten is the second hardest material after diamonds, making it highly scratch-resistant and durable. It is also hypoallergenic and affordable. However, tungsten rings can be brittle and may break under extreme force. Additionally, they cannot be resized due to their hardness. Tungsten rings come in a natural gunmetal gray color, but they can be plated with other colors, although the plating may eventually scratch and wear away. Tungsten rings are a popular choice for wedding bands due to their unique properties and affordability