Four pairs of gem-set cufflinks, by Trianon

Four pairs of gem-set cufflinks, by Trianon
One pair set with cushion-shaped smoky quartz terminals with citrine collets; one pair composed of onyx and rock crystal terminals set with brilliant-cut diamond accents and onyx cabochon finials respectively; one pair set with carved chalcedony terminals inset with cabochon sapphire detail; and one pair set with a shell, nassarius distortus, with cabochon cornelian finial to a cornelian baton terminal
Each signed Trianon, numbered (8)