18k Yellow Gold Overlay Solid Multi Colors Glass Stud Earrings (Green). Accentuate your look with this classic pair of stud earrings that will make you impress at the first glance. A 18k yellow gold overlay alloy has an embellishment of solid Multi Colors glass. Perfect for engagements, weddings, valentine day, halloween day, thanksgiving day, christimas and all other occasions. All measurements are approximate and may vary slightly from the listed dimensions.