The main difference between an opal engagement ring and opal ring is that as the names imply, the wedding rings are exchanged during the actual wedding ceremony, while the engagement rings are exchanged only when the couple is engaged. An engagement ring is usually given as part of the proposal in the early stages of engagement, or not. In contrast, a wedding ring tradition is traditionally a simple metal band or a diamond-encrusted perpetual band that you take after exchanging your vows at the wedding ceremony and live on ever since. Many jewelers sell engagement rings and wedding rings as sets so that they match each other and look stylish when worn together. However, this is absolutely not necessary and you and your partner may prefer to buy wedding bands at your own leisure if you want to keep some of them. Once you are married, tradition dictates that your engagement band will go back to the third finger of your left hand. When you do this, your wedding ring should be closest to your heart (where your wife put it on your wedding day) and your engagement ring is placed next to the wedding ring. In Western countries, engagement rings are worn by most women and rings can be characterized by diamonds or other gems. Neolism "management rings" are sometimes used for an engagement ring worn by men. In some cultures, men and women wear matching rings and engagement rings can also be used as wedding rings.