Brilliant Earth Group, Inc.
A jewelry retailer known for engagement rings and fine jewelry, Brilliant Earth sells both naturally mined and lab-grown diamonds, with a Design Your Own tool and dozens of US showrooms. It was founded in 2005 after cofounder Beth Gerstein struggled to find a beautiful, ethically sourced ring for her own engagement, and she later teamed up with Stanford classmate Eric Grossberg. The two Stanford business students launched the company to make jewelry sourcing more transparent and sustainable.