A coloured stone places a single, deliberate note at the centre of an engagement ring. Couples choose colour when they want the ring to say something particular: the blue of a sapphire, the red of a ruby or the green of an emerald. At Hatton Garden Bespoke Jewellery, where our founder has worked in the quarter since 1999, we design each gemstone ring in CAD and hand-finish it at our own bench, with casting and setting carried out by trusted specialist workshops. GIA or IGI certification is available on every centre stone, and London Assay Office hallmarking is included.
Sapphire
Sapphire is the most practical coloured stone for everyday wear. At Mohs 9 it sits just below diamond for hardness, which suits a ring worn daily. The classic cornflower and royal blues remain the most requested, though sapphire also occurs in teal, green, yellow, peach and the pink-orange padparadscha. We can match a specific blue and balance it against white or yellow metal. Read more about sapphire engagement rings.
Ruby
Ruby is red corundum, the same mineral as sapphire, and shares its Mohs 9 hardness. That durability, paired with a saturated red few other stones reach, makes it a confident centre stone. Colour drives value more than size: the most prized rubies hold a pure, slightly warm red without drifting toward pink or brown. We source to a clear brief and confirm origin and treatment on the certificate. Read more about ruby engagement rings.
Emerald
Emerald is a beryl, softer than corundum at Mohs 7.5 to 8 and more prone to internal inclusions, so it asks to be handled with care. We favour protective settings for emerald: a bezel or partial bezel, or a halo that shields the girdle and corners from knocks. With the right stone and a protective setting, an emerald wears well every day. We advise on both the stone and the setting that protects it. Read more about emerald engagement rings.
Aquamarine
Aquamarine is the cool blue member of the beryl family, clear and watery in tone, often available in larger sizes at sensible cost. Its restraint suits couples who want colour without strong saturation, and it pairs well with white metals and a clean, modern setting. As with emerald, we account for beryl's hardness when designing the mount. Read more about aquamarine rings.
Ethical sourcing and certification
Independent GIA or IGI certification is available on centre stones, and the finished ring is hallmarked at the London Assay Office, included as standard. We work with established suppliers and confirm origin and treatment in writing before you commit. We offer both natural and lab-grown stones where the species allows, and we are clear about which you are buying and why one might suit your budget or values better than the other.
Commissioning a bespoke ring with us
Our family has been in the trade since the late 1960s, three generations, and we design in CAD and hand-finish at our own bench at Unit 1.02, The Goldsmiths' Centre, 42 Britton Street, with casting and setting carried out by trusted specialist workshops. A commission begins with a free, no-obligation consultation, in person by appointment, by phone or on WhatsApp. We move to CAD in about seven to ten days, and once you approve the design the ring is made in three to four weeks. You receive a full written quote before any work starts. Bespoke engagement rings start from £2,000, with most commissions falling between £3,000 and £12,000.
If you have a stone in mind, or simply a colour, we are glad to talk it through. Book a free, no-obligation consultation and we will reply within four working hours, Monday to Friday. Arrange a consultation or start with a setting.
