

Founded by an industry expert. Charlotte Rose and her team have extensive history and experience in the diamond industry. Whether buying or selling an item of diamond jewellery, or looking to sell loose natural diamonds, our dedicated diamond and precious stones department is the place to start.
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Founded by an industry expert, in 2024 Charlotte Rose was appointed the First Female Vice President of the London Diamond Bourse, recognising her expertise and skills amongst the diamond industry. Alongside Charlotte, works some of London's highest regarded diamond experts, with a network spanning internationally of both buyers and sellers of natural diamonds. At Furlong, our decision to exclusively represent the natural diamond market stems from our belief in the irreplaceable value of the earths finest creations. We aim to offer our clients an unparalleled selection of authentic, sustainable and timeless treasures - diamonds that embody the beauty, rarity and history that have made them revered for centuries.

Our experts are constantly consigning for our upcoming auctions. With monthly auctions offering designer jewellery, important pieces, vintage and antique jewellery and specialist diamond and gemstone jewellery auctions, we're always excited to consign new pieces from private collections and estates.
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We offer free in house jewellery valuations for auction sale by appointment only, with our dedicated diamond and precious stone specialists taking the time to carefully research and appraise each item. Our team consists of qualified gemmologists, renowned industry leaders and antique jewellery specialists with over 50+ years of experience combined ensuring the authenticity of each item consigned.
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For private collections, we offer a discreet at home valuation service, where a member of our team will visit you in the comfort and security of your own home. For more information on home visits, click here.
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Round Brilliant Diamond​
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Old Cut Diamond
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Emerald Cut Diamond
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Cushion Cut Diamond
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Radiant Cut Diamond
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Pear Cut Diamond
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Antique Diamond
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Oval Cut Diamond
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Old Mine Cut Diamond
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Rose Cut Diamonds
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Marquise Cut Diamond
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Diamond Engagement Ring
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Antique Diamond Jewellery
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Diamond Earrings

Get in touch now to request your free, no obligation auction valuation.
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Include as much information as possible about your item(s) and upload a clear, high resolution photograph.
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One of our experts will be in touch within 48hrs to discuss your valuation, and possible consignment.
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You can also chat with an expert via WhatsApp. Click here to send us a message.


Alan Cohen is one of the world's foremost experts in both rough and polished diamonds. With over 50 years industry experience, working in global key markets such as Russia, America, London and Africa, Alan's knowledge of large and significant diamonds is unparalleled.
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Considered one of the most eminent diamantaires of his generation, since 2012, Alan has been a member of the board of the London Diamond Bourse, serving as president from 2018 until 2023. He continues to contribute to the global diamond industry through his roles with the World Federation of Diamond Bourses (WFDB) and the World Diamond Council (WDC), where he is a Board member and active participant in the WDC’s Kimberley Task Force. Additionally, Alan serves as the UK Diamond Expert for the British Standards Institute and is a member of the CIBJO Diamond Commission. Read More.
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Address
100 Hatton Garden
London EC1N 8NX
Phone
+ 44 (0) 20 _________










