Shop › London Blue Topaz Ring Image 1 of 1 London Blue Topaz Ring from $398.00 Sterling silver with 2.44 ct. London Blue Topaz. Available with citrine, amethist, swiss blue, light blue and brown topaz Quantity: Purchase Added! Sterling silver with 2.44 ct. London Blue Topaz. Available with citrine, amethist, swiss blue, light blue and brown topaz