Cubic zirconia stones add sparkle to this fun cartilage earring set. Switch 'em out or stack 'em up— a clicker hoop, CZ marquise, and a CZ round duo stud. Made in surgical-grade stainless steel Stone: Cubic Zirconia Stone Size: 4 x 2 mm, 1.5 mm, 2 mm Gauge: 18 Tube Length: 1/4" Hoop Diameter: 5/16" Height x Width: Hoop 10 x 10 mm; Marquise 4 x 2 mm; Round Duo 5 x 2.5 mm Fits cartilage piercings: helix, forward helix, tragus, conch and flat.