"Emerald's lush green has soothed souls and excited imaginations since antiquity, but perhaps it was Pliny, the Roman author, who said it best: \"Indeed, no stone has a color that is more delightful to the eye, for, whereas the sight fixes itself with avidity upon the green grass and the foliage of the trees, we have all the more pleasure in looking upon the emerald, there being no gem in existence more intense than this.\" From the ancient Egyptians to the Incas, to the royals of Europe and…