LOT OF STONES ON PAPER For a necklace project, comprising twelve round shaped blue topazes and citrines and one pear shaped blue topaz, weighing together 38 cts. An unmounted gemstones set comprising twelve round shaped blue topazes and citrines and one pear shaped blue topaz, weighing together 38 cts. A.I.G. certificate attesting : pierres naturelles (natural).