These unique style studs feature the larger ball which sits behind the earlobe and acts as the butterfly to fasten the studs the front of the stud has been set with a purple cz the silver and rose gold colour gives a warm stylish look to any outfit and can be mixed with different sets to create alternative combinationsrdiameter of the large ball 13cm stud part 08cmrmaterials silver plating rose gold plating and a purple czrcode e1878