Lot of three rings

Here’s a lot of 3 rings which were purchased in a boutique years ago. The gold one with the blue stone is a Chico’s ring and I believe it was purchased for $25, the gold one is a 1970’s Avon ring but it is missing the center faux diamond and the silver tone one is not marked. I listed all the measurements in the pics - if you have any questions, please don’t hesitate to ask 😊