London Blue Topaz & White Topaz Trillion Cut EarringsBlue Topaz Trillion Earrings These 9ct yellow gold earrings are designed around striking London Blue Topaz and White Topaz gemstones. The central focus of each earring is the deep blue of the London Blue Topaz, which is paired with the clarity of the White Topaz. Each gemstone has been cut into a precise trillion shape, a triangular form with faceted surfaces. The stones measure 8mm in width and 8mm in height, and are set within the warm toned 9ct