According to the western traditional rules, when engaged, the man should give the woman a diamond ring to show his sincerity and express his desire to get married. When you get married, you should give each other rings. This ring should be a ring, generally without diamonds, to express "we are a couple" and live a simple life together. The metal ring of the ring generally chooses white metal to express holiness and loyalty. As for the size and style, it is related to personal preference and economic situation. Therefore, from love to marriage, there are always three rings!