Bridal by Sertelle

Solitaire Freeform Ring · 0.17 ct

£875
Or 3 interest-free payments of £291.66 with Klarna

14K Yellow Gold

Metal — 14K Yellow Gold
Ring size Size guide

Not sure? Choose “Send a sizer first” — we post a complimentary ring sizer before your piece is made.

  • Independently certifiedIGI or GIA report with every qualifying stone
  • London hallmarkedStruck at the Assay Office, not self-declared
  • Free insured deliverySigned for, discreet packaging, fully covered
  • Yours for lifeResizing, re-polishing and care, on the house

Made to order in 10–14 days · Free insured delivery

The Details +
Centre stoneLab-grown diamond, oval cut
Carat weight0.17
MetalHallmarked in London
Approximate weight3.7 g
Crafting time8 days
Certification +

Every centre stone above 0.30ct arrives with its own independent grading report from IGI or GIA — the same laboratories that certify mined diamonds. Your report records the stone's exact colour, clarity, cut and measurements, and its laser-inscribed girdle number.

Sample certificate: IGI LG-627xxxxx

Delivery & Returns +

Made to order in 10–14 days, then sent by free insured, signed-for delivery in discreet packaging. As a piece made for you, standard returns do not apply — your first resize within 60 days is complimentary.

First resizing is free, whenever you need it.

Sertelle Care +

Certified by IGI or GIA. Hallmarked at the London Assay Office. Yours for life — resizing, re-polishing and care, on the house.

Solitaire Freeform Ring · 0.17 ct
£875
The Sertelle Standard

Every piece earns its place

Certified stones

Lab-grown diamonds, graded to the same standards as mined stones. Reports from independent laboratories on qualifying pieces.

London hallmarked

Precious metal, independently assayed and struck at the London Assay Office — the mark that has meant what it says since 1327.

Yours for life

Resizing, re-polishing and care, on the house, for as long as you own the piece. That is the whole policy.

Solitaire Freeform Ring · 0.17 ct — 14K Yellow Gold view 2
Grown, Not Mined

The same stone. A better story.

A lab-grown diamond is a diamond — carbon, crystallised, with the same fire, hardness and light as anything pulled from the ground. The only differences are where it began, what it cost the earth, and what it costs you.

Because the stone asks less, the piece can give more: fuller settings, better metal, and a price that reflects craft rather than scarcity.

Configure yours above
The Numbers, Plainly

What you are actually buying

Primary Stone Type Lab-Grown Diamond
Primary Stone Shape Oval
Primary Stone Size 4 X 3 Mm
Approximate weight 3.7 g
Crafting time 8 days

Full specification in The Details above. Anything unclear — ask us, we answer plainly.

Wear It Your Way

One design, 5 metals

Select a metal to see it above — the price updates with it.

The Quiet Part

Bought once. Looked after forever.

Made for you

Crafted to order, then sent by free insured, signed-for delivery in discreet packaging.

Easy to live with

Your first resize within 60 days is complimentary. First resizing free, whenever you need it.

Never on your own

Cleaning, checking, re-polishing — bring it back any time. The piece is yours; the upkeep is ours.

IGI / GIA Certified
UK Hallmarked
Free Insured Delivery
30-Day Returns & Lifetime Warranty
127 reviews · 4.9 average

Words from the House

“The stone catches every kind of light. I compared it against mined solitaires at twice the price and honestly could not tell the difference — the certificate settled it.”

James R · London

“The sizer arrived first, which made the whole thing effortless. The presets took the guesswork out of choosing a diamond — Signature was exactly right.”

Priya S · Manchester

“The hallmark, the certificate, the weight of it in the hand — nothing about this feels mid-range except the price. Resizing was handled within a week.”

Eleanor W · Edinburgh