It seems that your ring might be 10 karats white gold from based on what you have cited and the color of the ring in the picture. The maker's mark isn't familiar to me but you might get some luck bringing it to an assay office, they will be able to inspect it better. Info on where it was bought and when can also be useful in identifying it. Hope that helps some!
Just tidying up some blasts from the past (including some very ancient ones), largely for the benefit of anyone searching the site for information.
The mark is for the Legend Jewelry Co. Ltd., founded in 1992 in Hong Kong and working primarily in silver, gold and platinum. They have subsequently established subsidiaries in the USA, Belgium, China and Macau.