Blue Nile
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 3pm ET.
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Our Signature round diamonds are cut with perfect proportions for maximum brilliance. Learn more
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The only ideal cut standard applied to the princess-cut diamond. Learn more
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The world?s only Asscher diamond cut to our ideal standards. Learn more
moreEvery 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.
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.
Read the comments our customers have sent us about their Blue Nile Signature Collection diamond.
For phone orders, please mention: C4Y238
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