Vintage 14k diamond ring

Hello everyone, this is my newest purchase. I was told its from the 30s or 40s. I myself would of guessed the 60s. Just with the shape and cut of stones. But I am only guessing. Also it does have a maker's mark. I would love any thoughts or if someone could point me in the right direction. The diamonds are cut just so interesting. The stick up higher than you'd think. It seems to be two different metals. Guessing they are both 14k gold. Since that's what is marked. Thanks for looking!