Few jewellers wear their story quite so neatly in their name as 77 Diamonds. The Mayfair house takes its cue from 1477 – the year Archduke Maximilian of Austria is said to have proposed to Mary of Burgundy with a diamond ring, a moment widely regarded as the beginning of the modern diamond engagement tradition.

Founded in 2005, 77 Diamonds has built its reputation on bringing that sense of occasion into a more contemporary setting: a London jeweller with a strong educational bent, a focus on craftsmanship and a showroom experience designed to make the process feel considered rather than intimidating.

That modern approach extends, naturally, to lab-grown diamonds. Once treated with a degree of scepticism by traditionalists, they have become an increasingly compelling option for buyers who want the same optical and chemical properties as mined stones, but with a more flexible price point and a distinctly current sensibility.

77 Diamonds offers both natural and lab-grown stones, clearly separating the two and certifying lab-grown gems accordingly – a sensible, transparent approach from a jeweller that has made clarity part of its appeal.

Which brings us to the prize. We’ve teamed up with 77 Diamonds to offer one reader the chance to win its elegant Dinastia eternity ring in platinum, worth £1,500.

Set with round brilliant-cut lab-grown diamonds totalling approximately 0.60 carats, in G colour and VS clarity, it balances presence with restraint beautifully.

The platinum 950 setting and slim 2.3mm band keep the look crisp and refined, while the uninterrupted line of stones delivers exactly the sort of clean, light-catching finish that makes an eternity ring such an enduring classic.