Pure Grown Diamonds announces a scientific breakthrough with the unveiling of the world's largest laboratory-cultivated white diamonds, which are indistinguishable from mined diamonds, even under a microscope, yet cost 30 to 40 percent less – just in time for the holidays when many Americans get engaged. The first-ever, largest lab-grown diamond is 3.04 carats. Pure Grown Diamonds have the exact same chemical composition, physical properties and optical features as earth-mined diamonds, according to the International Gemological Institute. Pure Grown Diamonds mature within six to 10 weeks. They are eco-friendly and "conflict free," unlike mined diamonds.

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