2mm or 3 mm would be fine. The smaller the band, the bigger the diamond looks.
* The wedding ring should stay with the woman and it can be appraised by a jeweler. If a man has an expensive wedding band then he has the option to keep that band. Both parties also have the option to sell their wedding rings for whatever value the rings are appraised at.
The most common wedding ring is a plain gold band. Styles vary widely on other rings, from different metals to stones and more. Engagement rings traditionally are a gold band with a solitaire diamond.
Yes, the fiancee should see the wedding band before the wedding to make sure she likes it and that it fits.
he is not married to a woman
Sometimes the engagement ring and wedding band come together, but whether or not it does or doesn't you can certainly show her the wedding band.
The ring you've described is most commonly called a solitaire. It is a popular style, both as a wedding ring and as a fashionable accessory.
There is nothing wrong with wearing your mother's wedding band as long as your fiance is fine with that idea. Often if a wedding band is handed down from one generation to the other it's acceptable to wear that band.
* Generally an Eternity Ring is worn on another finger where it is on it's own and shows up more than crowded in with an engagement ring and wedding band, but there are no rules that you can't wear it on your wedding band finger and it should go below the wedding band and engagement ring.
Whether the woman purposes to the man or he proposes to her it is the man that gets the engagement ring and not the woman. If he accepts your offer then you can buy a wedding band for him once a date is set for the wedding.
The engagement ring is typically worn closest to the hand, followed by the wedding band. The engagement ring is usually given before marriage, while the wedding band is exchanged during the wedding ceremony. However, cultural and personal preferences may vary, and some people may choose to wear their wedding band closer to the hand.
Engagement rings are traditionally given to the lady upon proposal and are usually larger often featuring a centre diamond or gemstone with smaller side stones. Wedding rings, however, are worn by both the male and female and are exchanged on their wedding day. Generally, wedding rings are simpler bands, sometimes the female band features smaller gemstones and are often designed to fit the engagement ring.
Usually the male proposed to the woman (asks her to marry him) and presents an engagement ring at the same time. If she accepts, the wedding planning begins. At the wedding she wears the ring presented at the time of proposal plus a wedding band. At this time she will also present the male with his wedding band as well. This is the American custom.