1920s antique 18 karat gold white size 7 1/2 quarter carat or a half carat not positive on that in good condition Scratch acid test shows it is 18 karat. The stamp on the inside is wore down from it being antique and used It’s about a quarter carat to a half carat diamond Cut: At this size and age, the stone is an Old European Cut. You can identify this by looking for a small "hole" or flat facet at the very bottom (the culet) when looking straight down through the center. delicate antique solid white gold. Hand carved.engraved design by the maker Art Deco ring, dating to the late 1920s or 1930s. This ring is antique it does show it is but still in beautiful condition its able to wear rite away its old so remember that Weber purchasing Im not a jeweler so please look close an see if you like it it’s absolute beauty most rings i found are 1800 and up im just trying to make my money back because I went w a different ring the way and this is 2.3 g which is heavy for this type of ring