Designing your own ring isn't difficult nor is it too time-consuming, especially if you have already educated yourself on what you want your ring to be. Essentially you just need to pick your stone, then pick your setting and then size, and then add your ring to the basket for purchase and check out on the site you have chosen. If you want to see how your ring looks as you design it, try finding a website that will virtually build your ring for you while you are building your ring. This is a neat concept because you can see your choices as you go.
If you don't wish to design your own ring on the Internet, you can take your idea to a jeweler who can assist you in building your own ring. Jewelers often offer a virtual ring builder that will show you the end result of your ring before you start building it.