Product Description 14 karat white gold is nickel free and high polished. The 1/4 carat (25 point) diamond is H-I SI2 and is a round cut solitaire in a prong setting. This is a standard size curved barbell designed to fit any standard belly button piecing. The barbell measures 14 gauge 3/8" in length and is internally threaded. The curved barbell and top ball are solid 14 karat gold (not hollow). Made in the USA, AAA quality. Ships in 5 business days.