Just gathered this group of rings to show to someone, and figured: why not post them here too?

1920s Onyx and Diamond Ring, 14K White Gold, $325
1840s Turquoise and Diamond Ring, 15K, $415
1912 Sapphire and Diamond Ring, 18K, $590
1920s Five Diamond Ring, Oval European Cuts, ~0.30ct, 18K and Platinum, $625
1950s Diamond Leaf Ring, 14K, $310
1910s Three Diamond Ring, Single Cuts, 18K and Platinum, $290