Natural beauty. Designed by Peter Thomas Roth, this sterling silver ring displays a circular, faceted blue topaz gemstone prong set at the center of a thick band with a ribbon-and-reed design band. From Peter Thomas Roth. Total gemstone weight is approximately 11.60 carats Prong-set, circular, faceted blue topaz gemstone; thick band with ribbon-and-reed design; oxidized finish Size 7 Measures approximately 1/2"L x 3/4"W Imported