Pros : These rings are really nice and I like it that they are sterling silver plated. Strictly for the gals because of their lacy design. Adjustable means anyone just about can wear them.
Cons : No cons.
Other Thoughts : Make 10 mini cabochons at a time. Doesn't take much time or materials. Glue them to the ring top with E6000 and...viola.
I sell these for $5 for the first one and $4 for each one thereafter. Don't hesitate to make them a little eye catching. Girls 10 and up love these. They are also popular with people to buy for future gifts. A really nice low-cost addition to your line.