I am confused and curious why an engagement, a formal agreement of getting married is a slave to a ring of metal. Historian says Egyptians and then Greeks are the father of tradition of wearing engagement rings.
Metal for engagement should be costly one like Platinum, Palladium, Gold or Silver and some might be trying to find from out of this world as well. the story of an engagement ring is not a onetime story; it is an epic in series include the metal, the precious or semi-precious stone, the Size, the Color of metal and stones and the most important one is about the choice of the one whom you are going to bound in agreement.
However Rhodium appears to be most expensive and dream of everyone but you can also trust Platinum, Rhodium, Gold, Palladium, Titanium, Ruthenium, Iridium, Osmium, Indium and Silver in making the strong bond of engagement. There is no evidence found that specific metal worked in certain conditions very well and the couple lived happily ever after. But yes all of them have different characteristics. If one is soft then other is brittle and hard. One is bright silver white then other is yellow in shines or grey-white. Selection of the metal is totally matter or finance and choice.
It is not the metal that keeps the couple in strong bond but some claims are there that gemstones in jewellery may have an impact on the personality of individuals and so the personal dealings and relationships. Most brilliant stones for engagement rings are Diamond, Ruby, Sapphire and Emerald. If a little element of superstitious is part of your life you can consult someone which stone is going to suit you for keeping you happy in a relationship. You can choose a combination of the stones for your relationship ring. Single stone mounted in the ring equally work. Gemstones are available on earth crust in different colours and sizes and shape dependent on the stone expert in cutting and then jeweller.
After choosing Metal and stones then comes the stage of the size which is not difficult or something to ponder upon.
You can consult Designer and Expert for complex jewel of your life