This is an amazing platinum diamond and sapphire engagement ring. The center stone is an old european brilliant cut diamond that weighs .87ct carats and is GIA certified. The color of the stone is I and the clarity is VS1. The center diamond is accentuated by several sapphire on each side. The ring features lovely open work design and beautiful hand engravings. The ring is size 5 1/2 but can be resized.