Vintage Sterling Silver 925 Mexico, Silver and Blue Dangle Earrings

Pretty pair of earrings for pierced ears. They are fully marked on the back, 925, Mexico. They have some blue in the earrings but I don't think it is a stone, more for color. The earrings have a butterfly back on them. They measure about 1.25" high by about 1" wide at the bottom. In nice shape and nicely polished. The weight on them per my scale is about 15 grams.