Brilliant Earth is proud to offer our entire collection of jewelry and loose diamonds to customers in many countries worldwide, and international orders can easily be placed through our website.

All diamonds offered by Costco are natural and untreated. Colored gemstones are often enhanced in the production process. All colored gemstones offered by Costco have been enhanced unless otherwise stated.

As outlined, we believe that lab-grown diamonds may not be a good financial choice because they may not retain value in the future. We also think they lack the romance and allure of natural diamonds while not necessarily providing any environmental benefits (this is still up for debate).

Are Brilliant Earth Diamonds Real? Absolutely. Our diamonds, whether they're naturally mined, or lab grown, are real diamonds. Lab diamonds are just as real as natural diamonds – in fact, they're made from the exact same carbon particles as their natural counterparts.