When it comes to longevity, platinum is considered the most durable metal for a ring. Platinum is naturally white, hypoallergenic, and resistant to tarnishing, making it an ideal choice for everyday wear. Additionally, platinum's density and weight make it an excellent option for securely holding precious stones like diamonds. While other metals like titanium or tungsten are also known for their strength and durability, platinum is often considered the top choice for those seeking a long-lasting ring.