Nishant Maniya

Diahearts Ltd is a London-based diamond supplier established in 2017, serving jewellers, traders, and retailers across the UK and internationally. Based in Hatton Garden, the company offers wholesale natural and lab-grown diamonds in a range of cuts, carat weights, colors, and clarities, including classic D–Z stones and pink, blue, and green varieties. Its selection also includes gemstones for bespoke jewellery and other special pieces.

Alongside diamond supply, Diahearts provides expert cutting, polishing, and remaking services at its London facility. Skilled craftsmen use advanced technology to shape rough diamonds, refine existing stones, and enhance brilliance and symmetry. The company says its diamonds are ethically sourced, conflict-free, and subject to quality checks.

Customers can browse stones from multiple suppliers, have selections consolidated and inspected, and receive them in a single delivery. Diahearts also highlights swift shipping, responsive customer support, and a cash-on-delivery option. Its services are designed to simplify sourcing and processing for jewellery businesses, with orders and support tailored to customers’ requirements.