Here is a picture of a find from around 6 inches down in the soil of upstate NY. I have no idea if its costume jewelry. I had to scrub the dirt off of the gold-colored area with water but the silver-colored section cleaned up very easily and does not appear to be tarnished much. It weighs 8 grams and the silver-colored section is raised approximately 1/8 in from the gold-colored back. The piece is approximately 1 inch tall and .75 inches wide. Any insights are appreciated!