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

We take pride in our hand-selected gemstones and extensive collection of pearls. Our stock is personally sourced from around the world. Through regular trips to gemstone-producing regions we have established strong global connections, allowing us to present you with an exceptional selection.