It is about 3/4 of an inch by 1 1/2 inch. Was owned by a woman that was born in PA and lived in Los Angeles, Las Vegas, and for the last 40 years of her life in Chloride, AZ I see no markings of any kind on it. And no, I'm too busy right now to worry about taking a picture of the backside of it, sorry! It is very pretty though!
Hi, When it comes to vintage jewelry, the back of the pin is paramount. It tells collectors approximate age, stone quality, etc. It really behooves you to photo it for the best of this auction. Truly.