Got two updates on the ring today from the experts at antiques roadshow. The first expert says.... He has no clue so he resubmitted the ring for other experts. The second expert sent me this.. Hello, my name is ***** ***** I am pleased to try to assist you. I have seen a pattern similar to that before, as the oval and rays represent the sun--the one I recall most was Masonic, and there was a tiny ruby instead of the raised gold "dot" in yours. The style is very much like examples manufactured in the late 19th and early 20th century in both Europe and the United States and I don't think they are maker markings on the inside, but rather the indentations from the raised casting on the other side. Many of these were made in both 18k and 22k gold, but you would need to have it tested by a jeweler (or buy an inexpensive kit yourself from a site such as eBay.com) to confirm the karat grade.
It is likely from the Art Noveau era (1890-1910) based on the way the designs are represented. Unfortunately, there isn't an incredible market for the style at present so the bulk of the actual value will be based on the gold content. There will be an additional premium of approximately 25% above that value because it is an attractive ring. Gold at present is about $30-31 per gram for 18k and $38-39 per gram for 22k. To calculate the value, once you have determined the actual purity, simply multiply the gram weight times the dollar amount stated above then add 25% for the form of the ring. That will put you pretty close to real world market in most all situations.
