The custom engagement ring design process, from brief to bench

Bespoke engagement rings are the commission most retailers are asked for and the one most likely to go wrong on timing. The work itself is not complicated. What causes trouble is that several stages depend on the client, and those are the ones nobody can schedule.

Stage 1 — the consultation

The aim is to leave with enough specification to model from. Useful questions, in rough order of how much they narrow things down:

• Centre stone: shape, size, and whether it is already owned or still to be sourced.
• Metal and karat, including whether white gold is acceptable given plating maintenance.
• Setting style: solitaire, halo, three stone, cluster.
• Shank: plain, pavé set, tapered, or fitted to an existing wedding band.
• Finger size, and whether it has been measured properly or guessed.
• Budget, stated as a range rather than extracted later.

Reference images are worth more than adjectives. Three pictures of rings the client likes will tell you more than a paragraph of description.

Stage 2 — the stone

Where possible, settle the stone before the model. Actual dimensions matter more than carat weight — two 1ct stones can differ by half a millimetre in diameter, and a seat modelled for one will not accept the other.

If the stone is still being sourced, model to a confirmed size and make the client aware that a substitution means a file revision.

Stage 3 — CAD modelling

Typically one to three working days for a straightforward ring. The model resolves seat dimensions, prong sizing, gallery height, shank profile and how the ring will sit against a wedding band if one is planned.

Stage 4 — renders and approval

The client sees photorealistic images, usually from several angles. Build in one revision round as standard — most commissions use it, and pricing as though they will not simply creates an awkward conversation.

Be clear that renders idealise. Metal colour, the way a stone catches light, and the scale of the ring on an actual hand all differ from the image.

Stage 5 — printing and casting

Two to five working days at most bureaus. The pattern is printed, sprued, invested, burned out and cast.

Stage 6 — setting and finishing

Two to five days depending on stone count. A solitaire is quick; a halo with a pavé shank is not.

Stage 7 — hallmarking and handover

Where required, add assay office time. Then final inspection and delivery.

Realistic total

Three to six weeks from brief to finished ring is honest for most bespoke commissions. Quoting two weeks and hoping is how a proposal date gets missed.

The stages you control are reliable. The stages that involve waiting for the client, or for a stone, are not — so quote the range and explain which part is which.

Where commissions go wrong

• Finger size guessed rather than measured, discovered after casting.
• A stone swapped late for one with different dimensions.
• A wedding band mentioned only after the engagement ring is modelled, when it should have been designed alongside it.
• Renders taken as a literal promise of colour and scale.
• No revision round allowed for, so the first change feels like a dispute.

Offering bespoke without a CAD designer in house

The modelling and rendering stage is the one most retailers do not have in house, and it is entirely outsourceable. You keep the client relationship and the consultation; the files come back print-ready and yours to send to whichever caster you already use.

We turn briefs into modelled, rendered, print-ready files, usually within a few working days. Quotations are free and carry no obligation.