Ready for a double take? This cartilage crawler stud earring features a CZ-lined double curve in 14K hollow gold with a titanium flat-back post for shine that's worthy of a second glance. Made in responsibly sourced 14K hollow gold and hypoallergenic polished titanium that's both lightweight and durable. Stone Type: Cubic Zirconia Stone Size: 1.2mm Gauge: 18G Tube Length: 5/16" Fits cartilage piercings: helix, forward helix, tragus, conch and flat.