I bought this as a treated Diamond from Zee Diamonds, It's a beautiful diamond that has been HPHT (Heated & pressure) treated. The ring is fine sterling silver with a White gold finish. Size of Pear Diamond - 18 mm x 14 mm x 9 mm The side stones are signity stones. The diamond has been tested and it test as Diamond. Will come with the certification Card. size 5 1/2