Goldbug Collection’s Round Top Turquoise Earring Charms feature an engravable center surrounded by bezel-set turquoise. The pair of earring charms includes machine engraving personalization. 18K Gold-Plated Brass, Imitation Turquoise Charm: 5 mm Bale Opening: 2.5 mm Care: To ensure a longer life for your Goldbug pieces, please do not shower, swim, or sleep while wearing them, and keep them away from sunscreens, lotions, and perfumes. To clean your pieces, rinse with warm water and gentle soap. Like our bug friends, sadly, costume jewelry doesn't live forever!