London Blue Topaz Sterling Silver Dangle | 0.75 | Blue/Silver | 1 EarringsBlue Silver London Blue Topaz Sterling Silver Drop Earrings. This is for a pair of London Blue Topaz faceted roundel bead earrings. You won't want to let these magnificent Sterling Silver earrings pass you by!! The color is top quality, ranging from deep teal to sparkling aqua to ocean blue! London Blue topaz refers to the darkest, richest color of topaz available on the market. London Blue topaz is a topaz that has a very specific, inky shade of aqua