The standard ring worn by Irish men and women in Ireland when they are married is just a plain gold band. You may be referring to the Claddagh ring, but that is not a wedding ring. Some people may include a Claddagh design on their ring, but most rings are completely plain. A Claddagh ring can be worn by anyone, married or not.
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.
The property of the one who is wearing it.
If he has a wedding ring then yes. If he has a wedding bracelet or necklace in it's place then they would be his wedding band. If it is a ritualistic tattoo, piece of clothing or (girls only) red dot on the forehead then they would not be considered wedding bands.
No, there is no law (in the US) requiring that she give back the wedding and engagement ring. Totally correct because the rings are considered a GIFT.
* Yes, but if the style is complicated it would be a special order by the jewelry store. Some rings that complicated in their setting come with the engagement and fit the wedding ring.
You can check for celtic style wedding bands at www.WeddingBandsWholesale.com. Overstock.com also carries these. It is possible Ebay would have them. If you are interested in a custom celtic ring, look at www.raru.com/.
Typically the only requirement is that is is a complete circle symbolizing unending love.
A thin yet stylish ring with a modest sized diamond is currently to most popular choice.
"Will you carry the ring at my wedding?"
The cost of wedding bands depends on the style of the band. A band can cost anywhere from two hundred dollars to over a thousand depending on the style of the ring and the metal used.
* 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.
A ring.. but NOT a wedding ring