9NV is a size reference, it has nothing to do with "Nevada Silver". The internet is full of garbage so you must be careful in your searches. There are rings made of gold and rings made of platinum which bear a numerical mark with the letters NV so that pretty much debunks the Nevada silver theory. Also any sterling item made in England will have at least three hallmarks. A rampant lion for sterling, a letter for the year, and another mark from the assayer's house or city. I hate to say it but it is highly unlikely that your ring has a natural ruby in it as they are usually much too valuable to be set in silver. Also rubies do not have a really high refractive index, in other words, they don't really sparkle a whole lot. The only real way to know what the stone or synthetic stone in your pretty ring is is to take it to a certified gemologist for examination, and often jewelers have such certification and the equipment to do so. It is a nice find, but I don't think when checked out professionally it will have a large monetary value/
