This is because no other metal can offer an ultimate strength and hardness like a platinum metal.
Apart from the hardness and strength, there are many other advantages of choosing a platinum metal to set your diamond engagement rings. For instance, the mirror-like reflection offered by diamond platinum engagement rings will give you the luxury of employing a minimum number of gemstones in your ring. Else, you may choose diamonds that exhibits less sparkle because the luster of the platinum metal settings around it will do the job.
Another benefit of choosing diamond platinum engagement rings is its hypoallergenic nature. That is, you can wear a platinum diamond ring without worrying about having a sensitive skin. The flexibility of designs is also a great advantage; you can make any kind of diamond ring designs or pattern using a platinum metal as it is the strongest metal available. The ease of maintenance is also a plus point when it comes to platinum diamond ring designs.