A.G.
You have some really good recommendations, but I wanted to throw in one more. I had my wedding ring made at Jan Dee Jewelers in the city. They are located on Diversy right near Racine. I had sapphires from some earrings my parents had given me as a child, my husband took them to the jewelers, drew what he wanted for me and they made my engagement ring. They then designed and made a wedding band to complement it. When I got pregnant with my daughter, my hands swelled up ridiculously. I had to have my rings cut off my hand and I was devastated. I felt silly and fat (thanks pregnancy hormones). They ladies at Jan Dee were so helpful and reassuring. After my daughter was born they put my rings back together and they look better than ever.
Sappy story aside, they are wonderful professionals with an inventory that ranges from extremely affordable to insane luxury. They can design and make anything you want and they are wonderfully creative.
Good luck!