De Beers has announced the planned closure of its lab-grown diamond jewelry brand, Lightbox, marking a strategic pivot back to its core business of natural diamonds. The company is currently in talks with potential buyers for Lightbox’s assets, including its remaining inventory, as it seeks to streamline operations and focus on higher-value market segments.

Launched in 2018, Lightbox was positioned as an accessible lab-grown diamond (LGD) brand, offering transparent pricing at $800 per carat to underscore the difference in value between lab-grown and natural diamonds. However, since then, the LGD jewelry market has experienced a dramatic shift, with wholesale prices falling by approximately 90% due to oversupply and intensifying global competition—especially from low-cost producers in China and mass-market retailers in the U.S.

De Beers cited this sustained price decline as the primary driver behind the decision to discontinue the brand. According to the company, the move aligns with its belief that lab-grown diamonds, increasingly commoditized, occupy a fundamentally different category from natural diamonds, which are positioned as rare, emotionally significant, and high-value.

The closure is part of the broader “Origins Strategy” unveiled in May 2024, which aims to refocus the business on high-return areas and reinvigorate consumer demand for natural diamonds. This includes increased investment in industry-wide marketing and initiatives that emphasize the unique value proposition of natural stones.

De Beers Group CEO Al Cook commented, “The persistently declining value of lab-grown diamonds in jewelry underscores the growing differentiation between these factory-made products and natural diamonds. As lab-grown production expands and prices drop, the gap will only widen.”

De Beers affirmed that it will support all current Lightbox customers through the transition, maintaining warranties and after-sales services. The company is also working closely with employees, retail partners, and suppliers to ensure a smooth wind-down of operations.

Meanwhile, De Beers’ synthetic diamond manufacturing subsidiary, Element Six, will shift its focus entirely to industrial and technological applications, where synthetic diamonds continue to show strong growth potential. “We are excited about the expanding role synthetic diamonds can play in fields like quantum computing, high-performance electronics, and medical technology,” Cook added