The top 1% of all diamonds in the world, hand selected and cut to our most exacting standards. Loose diamonds from the Blue Nile Signature Collection will ship the next day if your order is placed by 7pm GMT.
Select three diamonds from our extensive collection to create your ring.more
Build diamond earrings from a pair of perfectly matched certified diamonds.more
Every diamond in the Blue Nile Signature Collection is hand-selected and cut to the most exacting standards, guaranteeing a more brilliant diamond than any other Ideal cut.
Custom made exclusively for Blue Nile, the Blue Nile Signature Collection includes the world's most brilliant round diamond.
Because diamonds of this quality are so rare, each one has a laser inscription. Only legible at 50x magnification.
Learn about our new lifetime diamond upgrade program.
For a truly extraordinary gift, choose jewellery created exclusively with Blue Nile Signature Collection diamonds.
Find out what other customers select after learning more about the four Cs.