I agree. I have one ring with each color as I like to have a variety. Another way to tell is that glass ones are only glued in, but a semi precious has the facets around the gems. I have had my rings for almost 40 years, and have never lost a set. I find too, that you can pay 75% less for really good jewelry by buying it at thrift shops and summer sales. Estate sales too, if you want to spent a little more.