Copper-bearing TourmalineParaiba or Rio Grande do Norte, Brazil A fine copper-bearing or "Cuprian-Elbaite" tourmaline faceted as a pear-shaped brilliant of pastel blue. Weighing approximately 1.26 carats and measuring 8.52 x 5.98 x 4.56mm FootnotesAccompanied by a GRS Gem Research Swiss Lab report numbered GRS2021-077179 dated July 12, 2021 stating that the 1.26 natural tourmaline or "Cuprian-Elbaite" contains minor elements including copper that are found in tourmalines in Paraiba (Brazil) and that it is heat treated.
Copper-bearing TourmalineParaiba or Rio Grande do Norte, Brazil A fine copper-bearing or "Cuprian-Elbaite" tourmaline faceted as a pear-shaped brilliant of pastel blue. Weighing approximately 1.26 carats and measuring 8.52 x 5.98 x 4.56mm FootnotesAccompanied by a GRS Gem Research Swiss Lab report numbered GRS2021-077179 dated July 12, 2021 stating that the 1.26 natural tourmaline or "Cuprian-Elbaite" contains minor elements including copper that are found in tourmalines in Paraiba (Brazil) and that it is heat treated.
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.jpg "Source: Christie's")
.jpg "Source: Christie's")
