1 Square Cushion-cut London Blue Topaz mm 7x7 total weight 1.78 carats, 16 Round Diamonds, G color, VS clarity, total weight 0.37 carats, Yellow Gold 4.30 grams and Black Rhodium. Handmade in Valenza, Italy. Designed by Carlo Antonini. Signed By A & Furst. Size 6.5. (Resizable to most ring sizes or available by special order).