Diamonds for sale: lab-grown gem auctions are all over TikTok right now, but some aren’t happy about it

Streamed auctions offer a cheap way to buy the precious gems, but experts warn that quality is not guaranteed The first time Andrea Greenhill came across a livestream auction for lab-grown diamonds while scrolling on TikTok, she was stunned. While the diamond engagement ring her husband proposed with years ago had cost thousands of dollars, these loose lab-grown diamonds were selling in seconds at…