How Do They Do It?

The programme examines how the finest oyster knives have been developed and how stadium lighting is reshaping sport across the globe. It also explores the role of greenhouse‑grown diamonds, with these lab‑cultivated stones at the heart of a burgeoning gemstone revolution that promises greater sustainability.

The broadcast titled Oyster Knives/Stadium Lights/Diamonds is a programme presented in an episodic format. It falls under the broader genre of documentary‑style television, offering viewers a concise yet informative look at three seemingly unrelated subjects that share a common thread of innovation. In this episode the audience is taken through the evolution of the world’s most refined oyster knives, followed by an overview of the lighting technologies that are reshaping sport across the globe. The segment then shifts to the gemstone sector, revealing how diamonds cultivated inside a greenhouse are driving a new wave of change. The portion on oyster knives traces how craftsmen have refined the blade, handle and overall design to achieve a level of precision that caters to both professional chefs and home cooks. Likewise, the segment on stadium illumination outlines the ways modern lighting systems are enhancing visibility, energy efficiency and the overall spectator experience in venues worldwide. Finally, the programme highlights the role of greenhouse‑grown diamonds, explaining how these lab‑created stones are at the heart of a burgeoning revolution in the jewellery market. By detailing the controlled conditions that allow such gems to be produced, the episode underscores the growing importance of sustainable, ethically sourced alternatives to traditionally mined diamonds.