14.35ct Black Opal 'Entourage' Ring

Oscar Heyman’s signature 'entourage' setting maximizes the impact of this gem-quality Australian black opal weighing over 14 carats. The play-of-color reveals a finely distributed pinfire pattern, with vivid flashes of blue, green, yellow, and orange. Formed over millions of years as silica-rich water filled natural voids in sedimentary rock and gradually hardened, black opals capture light within a microscopic internal structure that diffracts color. A striking expression of geological artistry, it captures the rare interplay of structure, light, and natural formation.