The pair of earring jackets do not have a gold mark but were tested with nitric acid and a "kee" tester to be 14k solid white gold. Together they weigh 4.1 grams and are 1/2" in diameter. The jackets should fit most any size stud. Each jacket holds 24 round brilliant cut natural diamonds. The 48 total diamonds have an approx total weight of .66 cts. The diamonds are between SI1 to SI2 and H to I in color.