These are vintage handmade sterling silver concho-style post earrings with a round shape and butterfly closure. They have a southwestern ethnic and regional style and measure .75" in diameter. The earrings are made of nickel-free sterling silver and are suitable for unisex adults. They were made in the United States in the 1980s and have a stud style. These earrings are not antique and do not feature a main stone. These are from my mom’s estate