Reese Witherspoon in Oscar de la Renta, Olivia Wilde in MarchesaTiffany & Co celebrated the launch of the sea-inspired 2015 Blue Book Collection with “Blue Book Dinner” at ABC Kitchen in New York City.

The stylish and intimate dinner party had cuisine by three-star Michelin chef Jean-Georges. Guests were also invited to touch and try pieces from the Blue Book Collection which featured diamonds, tourmalines, sapphires, pearls and exceedingly rare blue diamonds. There were also designs from Tiffany’s archive including a 21.04-carat round aquamarine bracelet in an explosion of mixed-cut gemstones and a diamond bracelet, with a large vibrant opal at its center, echoing the colors and fluidity of the ocean.

In attendance were guests like Reese Witherspoon, Amber Heard and Olivia Wilde, Prabal Gurung, Jason Wu,Edie Campbell, Constance Jablonski, Valentina Zelyaeva and Dree Hemingway amongst the others.