London Jewellers Who Sell
Natural Diamonds Only
Some houses have declined lab-grown entirely, on the argument that a mined stone holds its value in a way a manufactured one does not. Whether you agree or not, it is worth knowing before you walk in, because these jewellers will not show you a lab-grown alternative.
15 verified jewellers are confirmed natural-only, meaning no lab-grown range appears anywhere on their own website. Ranked on the same Wilson score used for the Top 100, which weighs the proportion of positive reviews against how many stand behind it. Full method.
5.0 from 895 Google reviews · Hatton Garden · Appointment only · Natural diamonds
Eric Ross Jewellers
5.0 from 634 Google reviews · Hatton Garden · Walk-in welcome · Natural diamonds
The Antique Ring Boutique (By appointment only)
5.0 from 348 Google reviews · Mayfair · Appointment advised · Natural diamonds
Pragnell
4.9 from 371 Google reviews · Mayfair · Walk-in welcome · Natural diamonds
5.0 from 95 Google reviews · Holborn · Appointment only · Natural diamonds
Budrevich Fine Jewellery Studio
5.0 from 83 Google reviews · Hatton Garden · Appointment only · Natural diamonds
Jana Reinhardt Jewellery
5.0 from 82 Google reviews · Clerkenwell · Appointment advised · Natural diamonds
Gemima
Gemima is not in the ranking above, and cannot be: she has no Google Business Profile, so there is no review record to rank. She is here on judgement rather than data, which is why she sits apart from the seven.
The case for her is qualification. Gemima Macdonald is a GIA-qualified gemologist with a decade in the trade including time at Boodles, working appointment-only from a Hatton Garden workshop. She sources off-market, favours unconventional cuts, and runs a “Diamond & Design” appointment where you see stones side by side before committing. Commissions typically start around £5,000 over four to six weeks. Full profile.
Review figures from Google, July 2026, refreshed monthly.
Other Ways to Narrow It Down
Walk-in Jewellers
The best rated London jewellers whose own Google listing says walk-ins are welcome.
Read the list → Lab-grownLab-grown Specialists
London jewellers who genuinely sell lab-grown diamonds, confirmed on their own websites rather than assumed.
Read the list → Never below four starsSpotless Records
Jewellers who have never received a Google review below four stars, ranked by how much evidence stands behind that record.
Read the list →