Astor by Blue Nile™ diamonds explode with light, emitting a radiance that is both rare and extraordinary. Only a limited quantity of diamonds qualifies for this exceptional status.
All Astor by Blue Nile™ diamonds are independently graded and certified by two independent and well-respected gemological labs. Each one receives a cut grade of Excellent (a grade Blue Nile calls Very Good) from GIA and have a certified light performance of Very High in brilliance, sparkle, and fire from GemEx.
Cushion cut, also known as pillow cut, has been a popular square diamond shape for more than a century. The cushion’s rounded corners and comparatively larger brilliant-cut facets create a unique design that highlights clarity and increases brilliance, making a triple Very High rating for light performance from GemEx even more difficult to obtain.
Discover a new tier of brilliance with the Astor by Blue Nile™ cushion-cut diamond.