This picture of my paternal grandmother was probably taken in the 1920s. My grandfather was affiliated with the circus and although they were divorced in 1913-1914 they continued theirs was an off/on relationship for many years after.
The diamond ring on her left had is a one and a half carat stone and was in it's original setting. I had it 'broken down' and reset, the setting was used for an amethyst stone which I gave my daughter on her birthday one year. The stone was reset into another setting and sits in a safe deposit box.