Your stack? Stacked. This cartilage stud earring features a round CZ set above a baguette in 14K hollow gold with a titanium flat-back post for a chic, elevated addition to your ear's lineup. Made in responsibly sourced 14K hollow gold and hypoallergenic polished titanium that's both lightweight and durable. Stone Type: Cubic Zirconia Stone Sizes: 4.0 x 2.0mm and 2.0mm Gauge: 18G Tube Length: 5/16" Fits cartilage piercings: helix, forward helix, tragus, conch and flat.