Art Deco Style Cabochon Cut Blue Topaz 9K Gold Ring Size N. It has a wonderful and unusual Art Deco design. The Blue topaz is just stunning and is approx 1.7 carats in size. It weighs 3.3 grams. Size N. It is fully hallmarked with the makers mark "GTV" for Gems Tv, 375, the anchor for Birmingham and the date mark "f". It is in excellent brand new unworn condition.