Go ahead—tie your stack together. This 14K hollow gold bow stud earring sparkles with CZ and features a titanium post and flat back that keeps your look comfortably wrapped up for everyday wear. Made in responsibly sourced 14K hollow yellow gold and hypoallergenic polished titanium that's both lightweight and durable. Stone Type: Cubic Zirconia Stone Size: 1.2 mm Gauge: 18G Tube Length: 5/16" Fits cartilage piercings: helix, forward helix, tragus, conch and flat.