Add delicate shapes to your stud earring collection with the Violet Dragonfly opal studs. These nature-inspired gold studs feature a dainty dragonfly shape with almond-shaped opals as the wings. Each pair is made with 14K gold vermeil over a durable sterling silver base for everyday hypoallergenic wear. Gold Vermeil: Gold Vermeil (pronounced ver-may), a sterling silver base with heavy and thicker gold plating (2.5 microns by US standards). It does not tarnish and it is hypoallergenic. Because gold vermeil is much thicker layer than gold plating, the gold last longer and will not rub off. However, the gold will gradually wear off overtime.