You tell us that you love Blue Topaz in all its shades... Sky, Swiss and London. Of course London Topaz, the most expensive and deepest colored is your favorite. The gorgeous peacock blue of this gemstone is truely mesmerising. A sparkling 3 carat London topaz has been simply pronghand set in the centre of this delicate filigree style ring to show it off to its best. The designer solid 925 sterling silver mount is 2 tone plated with 18k yellow gold to give a luxurious feel.