Montepuez Ruby Mining (MRM), one of the world’s largest ruby mines located in Mozambique, plays a significant role in the global coloured gemstone supply chain. This coverage explores MRM’s mining operations, sustainability commitments, and ethical sourcing practices, as well as its connection to the UK jewellery market through gemstone trading and responsible sourcing initiatives. Jewellery Focus reports on corporate developments, transparency measures, and the wider market impact of Montepuez rubies within the international fine jewellery industry.