The Oval Hybrid Curved Barbell has an 8x6mm stone in a setting that is made from 14k Gold. The Curved Barbell itself is made out of 316LVM Surgical Steel. The Oval is permanently attached to the Curved Barbell. The Top Gem is a 3mm Round Gem with a 4 prong setting which is also made out of 14k Gold. These Round Prong Settings are also internally threaded for your comfort and the setting can be made in either 14k White or Yellow Gold.