Gorgeous 194 Carat Cabochon Cut Rubellite White Gold Necklace by Cartier Necklace – white gold, one 194.24-carat cabochon-cut rubellite, rubellite and moon quartz beads, emeralds, onyx, brilliant-cut diamonds. Gorgeous 194 Carat Cabochon Cut Rubellite White Gold Necklace by Cartier Cartier Necklace – white gold, one 194.24-carat cabochon-cut rubellite, rubellite and moon quartz beads, emeralds, onyx, brilliant-cut diamonds.