Incorporation in all major commission, such as those for European royalty, remained a prerequisite. If not the focus of the piece of jewelry, it was used in clusters of large stones or in glittering fields of pae-set smaller ones that served to accentuate the central composition. Introduced in this manner, often interspersed with coloured gems, the diamond’s fiery inner beauty allowed it to survive the charges of exclusivity aimed at it by Art Nouveau jewelers. Part of its appeal lay in the irreproachable manner of its presentation: each setting represented a celebration of the lapidarist’s art