Blue Sapphire Tubogas Necklace 14k Yellow GoldThis 14 karat yellow gold tubogas necklace features a graduated design that works as both a 15. 5 inch collar and a wrap bracelet. Three round cabochon blue sapphires totaling . 40 carats accent the center, their smooth, polished surfaces catching light from every angle. The flexible tubogas construction moves fluidly and sits comfortably against the skin. The sapphires display a rich blue color, and the cabochon cut gives them a dome shape that shows