Blue Topaz & Diamond 9k Gold Ring Size M 1/2. A blue topaz gemstones finished off with a genuine diamond on the top of the shoulders. Fully hallmarked for 9ct gold with "375", the anchor for Birmingham, the date letter "f" and the makers mark. Weighs 3.0 grams. Size M 1/2. Excellent condition. Comes with a new luxury ring box.