Sold individually. These are all costume jewelry.
The largest one with the white Cameo opens up and is a poison locket. The band is adjustable but I wouldn't go any bigger than a size. 8 has a little bit of tarnish, and part of the hinge is disconnected but it still shuts really tight.
The Cameo with the two flowers. By Whiting & Davis. It's hard to see in the picture, but it is a really pretty pink glass with intaglio gold flowers this one is about a 7.5
The black Cameo is the only one in a silver colored setting. It's marked Germany and has a black Intaglio glass Cameo. This one is slightly adjustable but would best fit a size 5,6, 7
And the one that's not a cameo is this beautiful. Amber glass cushion cut ring in a gold colored setting. There is a scratch on the stone. It has some wear so I'm going to sell it discounted but it's so fabulous. I wish it was my size. It is not adjustable and is a about a size 5