High Quality Turquoise Cubic Zirconia Red Ruby Gemstone In The Center Flower Charm High Grade 361L Surgical Steel . Real 18K Gold Plated Or Steel Available Post Length Sizes: 5mm, 6mm, and 8mm Our tiny flower stud earring is threadless push pin flat back style , so you can wear them in your cartilage piercings (like a tragus, conch, daith, or helix) - or your standard lobe piercing . Our push pin flat back earring studs are made of solid 316L implant grade steel , it's hypoallergenic and always nickel free.