Are lab-grown diamonds real diamonds? And are natural diamonds really worth the price we pay for them? From busting the myth that lab-grown diamonds are somehow less real to understanding how they're made and how they compare with mined diamonds, there's a lot to unpack. Can a jeweller tell them apart just by looking? What makes a diamond valuable? And what does the Kohinoor tell us about diamond purity? We sit down with Pooja Madhavan, founder of Limelight, to break down the science, separate fact from fiction, and explore the business behind the sparkle.