2.0 tcw/pair; Ear Jacket has dual-stud opening for custom drop length Drop length: Ear jacket has drop length of 14-16 mm; Stud has push back closure Posts: Stud has double notch post.; Lab-grown diamonds are diamonds that were grown by scientists in a lab. Chemically and physically identical to natural diamonds, these are just as hard.; 14K Yellow Gold with Lab Grown Diamonds; Made in USA