Fleur necklace in 14K white gold features a 13.80-carat color-changing copper-bearing fantasy-cut tourmaline from Mozambique blue-green sapphires (3.15 TCW) and G-color, VS-clarity diamonds (2.68 TCW) ...

The method is suitable for gemological laboratories equipped only with LA-ICP-MS. Many large complex jewelry pieces, such as the rainbow tourmaline bracelet in figure 13, mounted with 33 square ...