This stud earring has been so popular we decided to add another color. The clear crystal option is classic. This set includes a 1 cm bar with five Czech crystals plus a second stud for those with multiple piercings. It is also offered in "opal" and "turquoise" crystal. Made of gold plated brass and the highest quality Czech crystal. (heavy 7-10 mil 24k gold). Designed and assembled in our Sonoma California studio. Made in United States