Diamonds and precious stones
Specialist auctions of natural diamonds and precious stones. From exceptional loose stones to diamond jewellery, fine rubies, sapphires, and emeralds —-bought and sold with precision and expertise.
Our diamonds and precious stones department is led by Seth Solomons, one of the UK's most respected diamond specialists, alongside Special Stones Advisor Alan Cohen — whose 50 years in the trade have included a term as President of the London Diamond Bourse. Together, they bring a depth of knowledge that is rarely found in the auction world.
We deal exclusively in natural, earth-mined diamonds and precious stones. In a market increasingly complicated by synthetics and treatments, that distinction matters - and our clients rely on it. Every stone that passes through our rooms is assessed for authenticity, quality, and fair market value before it reaches the saleroom floor.
Natural diamonds. Precious stones. Uncompromising expertise.
THE DIAMONDS & PRECIOUS STONES DEPARTMENT
Natural diamonds & precious stones only. Furlong Auction House does not accept synthetic (laboratory-grown) diamonds for auction. All lots are verified for natural origin by our specialist team before acceptance.
SELLER'S
FEE
12% INC VAT
BUYERS PREMIUM
24% INC VAT
VALUATION RESPONSE
48 HOURS
COMBINED EXPERIENCE
50+ YEARS
WHAT WE SELL
From brilliant cuts to rare coloured stones
Our sales include loose diamonds of all cuts and qualities, important single stones, diamond jewellery, and the finest natural coloured precious stones - each assessed and described by our specialists before every sale.
• Round brilliant
• Old euro & old mine
• Emerald cut
• Cushion cut
• Oval cut
• Pear cut
• Radiant cut
• Marquise cut
• Fancy colours
FOR BUYERS
FOR SELLERS
Buying diamonds at Furlong
Selling diamonds at Furlong
Our live online auctions are open to bidders worldwide. Registration is free and takes minutes - no experience required. Once registered, you can browse the full catalogue, place absentee bids in advance, and bid live on the day.
Whether you have a single diamond, a collection of loose stones, or diamond jewellery you wish to sell, our team handles the entire process - from valuation and authentication to sale and settlement. Our fixed fee structure means you know exactly what you'll receive before the hammer falls.
1. Register free - create an account at auctions.furlongauctions.co.uk in under 2 minutes.
2. Browse the catalogue - view every lot with expert descriptions, estimates, and condition reports before the sale.
3. Bid live or leave an absentee bid - watch and bid in real time from anywhere, or set a maximum bid and we'll bid on your behalf.
4. Pay and collect - we accept card and bank transfer. Collection from Hatton Garden or insured delivery arranged.
24% BUYERS PREMIUM INC VAT
1. Request a free valuation - send photographs and our experts will provide a no-obligation auction estimate within 48 hours.
2. Agree terms and consign - we'll agree an estimate range and reserve, then collect or receive your items at Hatton Garden.
3. We do the work - professional photography, expert catalogue descriptions, and targeted marketing to our bidder network.
4. Fast settlement - payment issued promptly, 14 days after the auction, with a full sale report.
12% SELLERS COMMISSION INC VAT
FREE & NO OBLIGATION
What is your diamond worth?
Diamond and stone valuations are among the most complex assessments in the gem trade - quality, provenance, certification, and current market conditions all affect the final price. Our specialists provide honest, free auction valuations within 48 hours, whether you have a certified stone or something inherited with no documentation.
For larger collections or estate diamonds, we also offer private viewings at our Hatton Garden office, where our team can examine stones in person and provide a written assessment.
Request a free valuation
Tell us about your diamond or stone. One of our specialists will be in touch within 48 hours with an honest estimate and sale recommendation.
Email your photographs
info@furlongauctions.co.uk • we'll reply within 48hrs
WhatsApp us
+44 7833 054617 • Monday - Friday 9:00am - 5:00pm
Book an in-person appointment
100 Hatton Garden, London • Strictly by appointment only
