by elle_chris » Jul 8, 2019 Hi guys - This is my first venture into MMD's, specifically fancy colored MMD's. Can someone give me a quick lesson on how they get the color? Specifically Blues (a true blue color without any green)? Are they grown Blue? Or do they undergo additional treatment? And if there's other types of treatments involved, are they permanent? I'm very interested in a few of the Blues from Brilliant Earth, but I want a "real" Blue diamond - meaning, mined or man made is irrelevant to me, but the color has to be part of the chemical structure of the diamond, not "added" at a later date via dyes or what not. Thanks for any info. you can give.