1ct radiant-cut solitaire in 18k Yellow Gold

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Radiant Solitaire Ring

Radiant-cut lab-grown diamond engagement ring

£1,850.00 GBP

Sale Sold out

Exceptional by specification. Chosen by eye.

F+ colour · VS1+ clarity · selected to appear colourless and eye-clean Independent IGI or GIA grading Your actual diamond is presented for approval before setting

Metal 18k Yellow Gold 18k White Gold Platinum

Exact face-up measurements confirmed before setting.

Our 18k gold is recycled.

Ring size

Not sure of the size? Select “I’m not sure” and our client care team will be in touch to assist.

Find your ring size

A comfortable fit should feel secure at the base of your finger and pass over the knuckle with gentle resistance.

Measuring at home

Use a physical ring sizer on the finger and hand you intend to wear your ring on.
Check the fit when your hands are at a comfortable temperature, and repeat at different times of day.
If using an existing ring, measure its inside diameter across the centre. Choose one worn on the same finger.

UK finger-size reference · measurements in mm
UK size	Inside diameter	Circumference
H	14.9	46.8
H½	15.1	47.4
I	15.2	47.8
I½	15.4	48.3
J	15.6	49.0
J½	15.8	49.6
K	16.0	50.3
K½	16.1	50.5
L	16.4	51.5
L½	16.6	52.1
M	16.8	52.8
M½	17.0	53.4
N	17.2	54.0
N½	17.4	54.6
O	17.6	55.3
O½	17.8	55.9
P	18.0	56.5

Between sizes, outside H–P, or planning a surprise? Select “I’m not sure” or “Other size” above. Our client care team will help you find the perfect fit.

A complimentary ring sizer

We’ll send your ring sizer by post once you’ve placed your order. When you’ve found your fit, let our client care team know your size. We’ll then begin making your ring and confirm your estimated dispatch.

Considering a larger diamond? Our Private Diamond Concierge can source a stone around your chosen design. Share your preferred shape, size and jewellery details, and our team will prepare a considered proposal.

Enquire with our team

Personal engraving (optional)

Up to six characters. We’ll confirm suitability before your ring is engraved.

Selected price

£1,850.00 GBP

Updates with your diamond size and metal selection.

Your selection

1ct radiant-cut · 18k Yellow Gold · Select ring size

Estimated dispatch after diamond approval: 19 November–3 December.

Selected for you. Approved by you.

Review your diamond before it is set

We send its grading documentation, exact measurements and a close-up video. Setting begins only after you approve it.

✓ Made to order in London
✓ Fully insured delivery
✓ Contact-first returns
✓ First resize complimentary

Ring details

A radiant-cut lab-grown diamond, held in a four-claw solitaire setting on a fine polished band.

F colour or higher; VS1 clarity or higher. Each diamond is independently graded by IGI or GIA and individually assessed to appear colourless and eye-clean.

Choose 18k recycled yellow gold, 18k recycled white gold or platinum. Made to order and hallmarked in the UK.

Your diamond’s grading report, exact measurements and close-up video are presented for approval before setting.

Choosing your diamond

A radiant cut combines a rectangular outline and clipped corners with brilliant-cut facets. Each stone is assessed individually for brightness, symmetry and balanced light return.

Carat measures weight. Face-up dimensions and proportions determine how a diamond looks on the hand; individual stones of the same weight may differ.

Before setting, we present your actual diamond’s grading report, measurements and close-up video for approval.

Delivery, returns & duties

Made to order in London. Orders are sent using an appropriate tracked and insured service; a signature is required on delivery. International delivery times vary, and duties or taxes may apply depending on destination.

To arrange a return or exchange, please contact us first. We will confirm eligibility and provide secure return instructions. Please see our Delivery & Returns information and Refund Policy for current terms.

Sizing & complimentary first resize

Your first resize is complimentary. If a resize is needed, please contact us before sending your ring; we will advise whether an alteration is suitable for the design.

If you are unsure of your size, choose “I’m not sure — please advise” and our client care team will contact you after ordering.

View the ring size guide

Lifetime Warranty

Every Katy Halliday creation is covered for life against manufacturing defects in materials or making.

If a covered manufacturing fault is identified following assessment, we will repair the piece without charge or, where repair is not appropriate, replace it at our discretion. Your statutory rights are unaffected.

Care & servicing

We’re here to help you care for your jewellery for years to come, with complimentary professional cleaning and inspection arranged through our client care team.

We recommend periodic inspection to keep your piece in beautiful condition. Where appropriate, we can also arrange polishing or rhodium plating, with any additional charge agreed with you before work begins.

View full details

Cut

A radiant cut combines a rectangular outline and clipped corners with brilliant-cut facets. Each stone is assessed individually for brightness, symmetry and balanced light return.

KHFJ: selected individually

Colour

ColourlessNear colourless

DEFKHFJGHIJ

D–F sits within the colourless range. We select F colour or higher, then assess each diamond by eye to ensure it appears beautifully colourless.

KHFJ: F colour or higher

Clarity

Clarity is graded under 10× magnification. Each diamond is thoughtfully selected for its beauty, with clarity grades typically within the VVS range and always VS1 or above. Every diamond is individually assessed to ensure no inclusions are visible to the unaided eye.

KHFJ: VS1 clarity or higher

Carat

Carat measures weight, not visual size. Two diamonds of the same carat weight can appear different on the hand, so we consider face-up dimensions and proportion alongside carat.

KHFJ: proportion considered with carat

IGI or GIA graded

Independent documentation for every centre diamond, with the report presented to you before setting.

Made in Hatton Garden

Made to order and hand-finished by specialist artisans in Hatton Garden, London.

Worldwide delivery

Tracked and insured UK and international delivery. A signature is required on delivery; delivery times vary by destination.

Lifetime craftsmanship warranty

Manufacturing defects are covered under our lifetime warranty.

PRIVATE CLIENT CARE

Questions about this piece?

Questions about the diamond, sizing, timing or the design? Speak with our client care team.

Katy Halliday wooden presentation box with north-south radiant cut solitaire

The finishing touch

Beautifully presented. Discreetly delivered.

Your ring arrives in our signature wooden presentation box, designed to be kept and used beyond the proposal. It is protected within discreet outer packaging and sent using an appropriate tracked and insured service. International delivery times vary, and duties or taxes may apply depending on destination.