Marcus McCallum Ltd was established in London’s historical jewellery district of Hatton Garden in 1984. With a strong emphasis on quality, we offer a choice of one-off gemstones and and pearls. Marcus started in the trade due to a passion for gemstones and over the years has built a team of gemmologists and experts to support the jewellery industry.

We take pride in our hand-selected range of unique gemstones and extensive collection of pearls. Our stock is sourced from around the world and through trips to gemstone-producing regions, allowing us to present you with a diverse and exceptional selection.