This is a size 8 ring, but if you contact me i can make it any size you want, for no extra charge. This ring is made to accept the 8 x 6mm Blue Sapphire from RioGrande. You can buy the stone at this link: https://www.riogrande.com/Product/Oval-Blue-Sapphire-Cabochons/090798?pos=23 , or i offer a black glass version of the stone in my shop.