I've been hunting my own yard for years, but didn't find these until the past week. Button is 1/2", bracelet fragment is about 3" long. They were both about 3" down. The stones in the bracelet, I'm not sure about.
Nice finds ! I would really like to see the bracelet fragment cleaned up and close up in good light ,you wont affect value as it is fairly modern and rather broken .(by cleaning it i mean )