Deep natural London Blue Topaz(1.53ct, VVS, Brazil) beautifully clean, hand set in a split shank sterling silver ring. This stone is full of fire & sparkle. London Blue Topaz is getting harder to come by as most Topaz are being treated to make Mystic Topaz. The treatment that turns a Topaz into a London Blue takes 18 months, which made it rare to begin with. Size 7 can be resized up or down 1 size