Allegra de Grisogono Style 14 Karat White Gold Eight-Row Mix Tiered White and Colored Enhanced Black Diamond Earrings. 585 stamped. 27.6 grams total weight. Matching Bangle Bracelet and Ring sold separately, Seen Below. Property of a NYC Socialite. After de Grisogono Three bottom center row each having 19 diamonds, flanked by two bottom rows of 22 diamonds with the top two row of diamonds each having 29 diamonds. Approx 159 diamonds. De Grisogono is a Swiss luxury jeweller. It was founded in Geneva, Switzerland, in 1993 by black diamond specialist Fawaz Gruosi, whose Lebanese-Italian. The Italian name Grisogono is derived from the Latin Chrysogonus which comes from the Greek Chrysogonos χρῡσό-γονος, meaning “begotten of gold”.