Vintage Estate Natural London Blue Topaz Marquise Cut Solitaire Filigree Ring. 925 Solid Sterling Silver. The Top Of The Ring Measures 3/8 Inches in Length. Set With One High Quality 10 x 5 mm Marquise Cut Natural London Blue Topaz Stone. Stamped 925. Excellent Condition/Like New. Vintage Estate Marquise Cut Natural London Blue Topaz Filigree Ring in 925 Solid Sterling Silver 708