Marcus Mccallum

This Company gave a Certified Trade Valuation of £90,000 for a Malayan Garnet. A loan of £60,000 was made taking that stone as security based on that valuation. The loan defaulted and the stone sold at auction for less than £11,000 in 2018. Draw your own conclusions!

The best stone dealers in Hatton Garden. Lovely team and very professional with competitive pricing! Highly recommend.

Great shop if you are a jeweller and in to gems. And great dealing with gemmologists that actually know what they are talking about !! Have some nice unusual gems too.

We have visited twice now to purchase crystal and mineral specimens. Marcus and his team are extremely welcoming friendly and helpful. Delightful experience, looking forward to our next visit.

What an amazing company!! if you want the genuine article and all the geek information to go with it, You have found the best gemstone and Diamond dealers in the UK. Amazing staff and such a warm & friendly welcome when you go to visit. Thank you Guys,

What a great gemstone dealer - so incredibly knowledgeable, friendly and helpful. He is enormously well respected in the jewellery industry and what he doesn't know about gemmology could be written on the back of a very very tiny gemstone. My first choice for over 20 years and will continue to be so every time.

Having visited Hatton Gardens multiple times searching for the right gemstone, I can't recommend Marcus and his team enough. They aren't pushy like a lot of merchants on the main street in Hatton Gardens. Marcus Mccallum and his team are incredibly friendly and although they are mainly wholesalers, they took the time to show me their sapphire stock and help me find the right one for an engagement ring. I ended up purchasing a green sapphire and they helped me get it certified in a very short time frame. I strongly recommend visiting Marcus and his team if you're looking for a knowledgeable professional yet friendly service. Should I ever require gemstones or precious stones in the future, Marcus and his team will be my first port of call.