14k white gold opal ring

I have a 14K white gold, opal with 12 blue sapphires around the opal. As this value? ?
Women size 8. This is an old and beautiful. I get it appraised, but some people want to do first. Tell me what you think. Thank you.
For a ring size 8, the weight could be 8g. 14k gold ring setting is not too expensive, about $ 300. While opal, if she could bring detailed things such as size or color, would be preferable. Opal is also surrounded by sapphire blue, so I think the great stone to be very expensive, about and 1500. While blue sapphires are lower than the opal, right. Each sapphire is priced at $ 80. The price of the entire room must also include the cost of craft or something, $ 200.00. You can participate in a jewelry professional for evaluation. Anything above that I said I just want to say something to evaluate a piece of jewelry. Good luck!