Site updated regularly: Last update:
7 June 2023
Site updated regularly: Last update: 7 June 2023
NOVEMBER 2020 LOCKDOWN We wanted to keep everyone updated on our plans for the second lockdown starting on Thursday 5.11.2020. We will be staying open and be available to help you with your enquiries. Keep safe everyone.
We recently visited the rock and gem fair at Saint Marie aux Mines in Alsace, which, for those into their mineral and fossil specimens was an absolute treasure trove. Saint Marie is an old silver mining town with a … Continue reading “Rocking it in Alsace”
We recently purchased a parcel of amber from the new find at Alem Ketema in Ethiopia. Until now the trade and gemmologists have taken the position that any green amber is treated, either by heating in an autoclave or by … Continue reading “New amber find at Alem Ketema”
Established in Hatton Garden in 1984, Marcus McCallum specialises in supplying rare and unusual precious stones to the trade. We also have a constantly-changing stock of pearls and beads.
More >
We constantly update our range of gemstones, pearls and semi-precious stones and beads. Our latest trip to Hong Kong has replenished our stock of freshwater pearls and added new and exciting examples of unusual beads. Look at our New Arrivals page or contact us for more details.
More >
We specialise in sourcing and supplying rare and one-off precious and semi-precious stones to the trade. All of our stock is personally selected from specialist suppliers and cutters around the world.
More >
We carry a permanent stock of freshwater pearls, from standard sizes of strands and loose pearls, to large baroque and fancy-shaped pearls in many colours.
More >
Our stock includes an ever-changing range of semi-precious beads with the emphasis on unusual and one-off stones.
More >
We also source and stock a wide range of unusual miscellaneous items including nephrite jade carvings, beads and jadeite carvings.
More >
-

NOVEMBER 2020 LOCKDOWN We wanted to keep everyone updated on our plans for the second lockdown starting on Thursday 5.11.2020. We will be staying open and be available to help you with your enquiries. Keep safe everyone.
-

We recently visited the rock and gem fair at Saint Marie aux Mines in Alsace, which, for those into their mineral and fossil specimens was an absolute treasure trove. Saint Marie is an old silver mining town with a … Continue reading “Rocking it in Alsace”
-

We recently purchased a parcel of amber from the new find at Alem Ketema in Ethiopia. Until now the trade and gemmologists have taken the position that any green amber is treated, either by heating in an autoclave or by … Continue reading “New amber find at Alem Ketema”