AdBlue Nile® Offers The Brightest Diamonds, Our Astor By Blue Nile™ Diamonds. Cherished For Their Unique Beauty, Diamonds Are The Ultimate Way To Mark Your Moment.
Established in 1931, the Gemological Institute of America (GIA) is the world’s foremost authority on diamonds, colored stones, and pearls. A …See more
Frequently asked questions
Q:
Which analysis and grading services are offered at each laboratory location?
A:
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AdCut, Color, Clarity, & Carat Charts. Learn about the 4C's to help select your diamond. Our entire diamond collection is responsibly sourced and offers exceptional quality.
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