Lab-grown Diamonds

Lab-grown diamonds are diamonds produced in controlled industrial environments rather than extracted from the earth through mining. They are created using two main methods: high-pressure high-temperature (HPHT), which replicates the conditions under which natural diamonds form, and chemical vapour deposition (CVD), which builds diamond crystals layer by layer from carbon-rich gas. Chemically, physically and optically these stones are identical to mined diamonds, differing mainly in origin and, typically, in price. The category spans both gem-quality stones used in jewellery and industrial-grade diamonds used in cutting, drilling and abrasive applications. Growth in lab-grown diamond supply has weighed on prices in the natural diamond market and prompted debate within the jewellery trade over disclosure, branding and consumer perception. Major diamond producers, including those in southern Africa, have positioned natural diamonds as a distinct premium product to differentiate them from the lab-grown alternative. Retailers in markets such as India, China and the United States have expanded lab-grown diamond jewellery ranges, often marketed at lower price points. The technology has matured rapidly over the past two decades, with production scaling up in countries including India, China and the United States. Industry bodies representing natural diamonds and precious metals, such as gemmological and jewellery trade associations, monitor the segment's growth relative to traditional mined-stone markets. The rise of lab-grown diamonds has also intersected with broader shifts in consumer jewellery preferences, including interest in alternative and complementary metals such as platinum and gold.