<h1>Sustainability claims require full life cycle disclosure as report exposes greenwashing and energy source gaps in lab grown diamonds.</h1> The report challenges misleading sustainability and consumer claims about laboratory-grown diamonds, stressing transparent life cycle disclosure and ISO 18323-compliant terminology. It notes significant reliance on coal-based power in manufacturing regions, that 'carbon-neutral' assertions often rest on offsets rather than full life cycle accounting, and the frequent absence of social sustainability considerations. The report distinguishes HPHT and CVD production from natural formation and highlights rapid market price depreciation, urging comprehensive disclosure on origin, energy sources, production methods, and social and environmental impacts to improve consumer information.