Superconductor is a material that can conduct electricity with zero resistance when cooled below a certain temperature. Copper and titanium-niobium filaments are commonly used in superconductors. While superconductors are typically used in high-tech applications such as MRI machines, particle accelerators, and power grids, they can also be used to create unique and visually striking jewelry. Some of the pros of using superconductor for jewelry include: Unique look: Superconductor jewelry has a unique look due to the visible copper and titanium-niobium filaments. Durability: Superconductor is a strong and durable material. One of the cons of using superconductor for jewelry is that the exposed copper may oxidize over time.