ELI5 Lab Grown Diamonds - why do they have lower resale values?

How are lab grown diamonds made? Are they exactly the same? Why do they have different prices and resale values? Which is more environmentally friendly? How have cultural and social attitudes evolved? ... we explain like I'm five Thank you to the r/explainlikeimfive community and in particular the following users whose questions and comments formed the basis of this discussion: pahpichulo, greenstrong, h0ly_s0x, twin_spoons and krimmson_ To the ELI5 community that has supported us so far, thanks for all your feedback and comments. Join us on Twitter: https://www.twitter.com/eli5ThePodcast/ or send us an e-mail: [e-mail]