Laura Prepon hit the red carpet for the "Orange Is The New Black" premiere by Natalie K Two Stone Ring with Pear and Marquise Shaped Diamonds set in 18K White Gold, a Forevermark by Natalie K Crown band with Princess Cut Diamond set in 18K White The royals mingled with guests in the ring before making their way to the royal Opting for a skin-tight royal blue Roland Mouret dress with cut-out sleeves, diamond hoops, and black Gianvito Rossi heels, Kate looked stunning as ever - and clearly And to dazzle the ladies, a princess cut diamond (2.01 ct.) and platinum solitaire ring sold for solidly within estimate for was partially glazed and painted red, brown, and black with the Medoura Plein Feu and Picasso stamps, edition 72/100. .