5.5mm CZ stud earrings in gold over sterling silver

These earrings are from an estate purchase in excellent almost like new condition not showing many signs of use.  White / colorless round cut cubic zirconia gemstones measuring about 5.5-5.7mm in diameter prong set in authentic 925 sterling silver that’s plated with yellow gold. Butterfly pushbacks are also yellow gold plated over 925. Reasonable offers considered