Gemstone type: 1 piece of oval shape genuine london blue topaz. Total carat weight: 0.94 ct. Feature stone measures approx.: 7 mm (L) x 5 mm (W) Accent stone type: 20 piece of round shape genuine white topaz Total carat weight: 0.20 ct. Accent stone measures approx.: 1.25 mm (L) x 1.25 mm (W) Total measures approx.: 11 mm (W) OR 7/16" (W) This piece of jewelry has 925 Trademark.