Perhaps one of the most vocal advocates for lab-grown diamonds, actress Penelope Cruz joined forces with Atelier Swarovski to create a collection of synthetic, red-carpet ready jewels which she debuted at the 71st Cannes Film Festival in May 2018. “To think that I am making something responsible, beautiful and empowering for women to wear is very emotional for me,” she said in a statement. Her collection includes a variety of necklaces, earrings, bracelets and rings. In addition to lab-grown diamonds, her designs also include synthetic sapphires and rubies. Celebrities like Zendaya, Karlie Kloss, Laura Dern, Mandy Moore and Olivia Palermo have all worn pieces from Cruz’s collection on the red carpet.