This umberella brooch does not have a gold mark but was tested with nitric acid and a "kee" tester to be 14k solid gold and weighs 6.6 grams. It measures 1 1/2" x 1" and has beautiful patina. Hanging off the one side of the pin is a .12 ct round brilliant cut natural diamond that is SI2 and H color. At the bottom of the handle is a bird with round red natural ruby eyes.