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Quick Answer There is no right number. The old rules — two months' salary, three months' salary — were invented by diamond industry marketing in the 1980s and have no basis in what actually makes a good ring. What matters is choosing a stone and setting that are right for your partner, at a budget that does not put you under financial pressure. Bespoke engagement rings at À Vie start from £800. |
The question of how much to spend on an engagement ring is one of the most loaded in the entire process. There are cultural expectations, family assumptions, and decades of industry messaging all pointing toward a number that bears no relationship to what actually produces a ring that your partner will love and wear every day for the rest of their life.
This guide cuts through the noise. What actually drives the cost of an engagement ring, what you should and should not spend, and how to make a budget decision that makes sense for your situation.
Where the two-months rule came from
The two-months salary guideline was introduced in De Beers advertising in the 1980s. It had no basis in jewellery craft, cultural tradition, or any measure of what a ring should cost. It was a sales target dressed up as etiquette. Three months came later, from the same source. Both figures remain in circulation because they have been repeated for long enough to feel like convention.
They are not convention. They are marketing. You can ignore them entirely.
What actually drives the cost
An engagement ring has two cost components: the stone and the setting. Understanding both gives you genuine control over the budget.
The stone
The stone is typically 60–80% of the total cost of a ring. Its price is determined by four factors — cut, colour, clarity, and carat weight — and by whether it is natural or lab-grown. Lab-grown diamonds are chemically identical to natural diamonds and cost 60–80% less at equivalent grading. The choice between natural and lab-grown is the single largest lever you have on stone cost.
Within natural or lab-grown, cut is the most important quality factor. A well-cut stone in a lower colour or clarity grade will appear more brilliant than a poorly cut stone with better paper grades. Prioritising cut and carat over perfect colour and clarity is generally where the best value sits.
The setting
The setting is the metalwork — the band, the setting head, and any additional stones. A simple solitaire in 18ct gold costs considerably less than a pavé halo with shoulder stones, both because of the material cost and the labour involved. Setting complexity adds cost, but it is a smaller part of the total than most people assume.
The metal itself also affects cost. Platinum is denser and more expensive than gold. 18ct gold is more expensive than 9ct but more durable for daily wear. The difference in setting cost between metals is real but not dramatic relative to the stone cost.
What different budgets produce
These are realistic starting points, not fixed tiers. Every commission is different.
Under £1,500: A well-specified solitaire or simple bezel with a lab-grown diamond of 0.5–1ct in good quality grades. Not a compromise — a focused brief that puts the budget into the stone and keeps the setting clean.
£1,500–£3,000: The range where most bespoke commissions land. A 1–1.5ct lab-grown or 0.7–1ct natural diamond, 18ct gold or platinum, with design flexibility across settings from simple solitaire to low-profile halo.
£3,000–£5,000: Larger or higher-grade stones, more complex settings, or the choice of a significant natural diamond. Full design latitude.
Above £5,000: Significant natural diamonds, fancy colour stones, elaborate setting work, or all three. These commissions are designed individually and priced accordingly.
What you should not do
Do not spend money that puts you under financial pressure. The ring is the start of an engagement, not the measure of it. A ring chosen and designed with care at £1,200 will mean more than a ring bought at £3,000 under financial stress.
Do not let a retailer's suggested spend influence your actual budget. The number exists to maximise their margin, not to help you make a good decision.
Do not sacrifice cut for carat. A 1.2ct stone with an excellent cut will outperform a 1.5ct stone with a mediocre cut in every lighting condition, every day.
How bespoke changes the budget calculation
With a high street ring, the price is fixed and the variables are fixed with it. You pay for the stone that is already in the setting, at the retailer's margin.
With bespoke, you direct the budget. You choose the stone — its size, grade, and origin — and you choose the setting, knowing what each decision costs. If you want to put more budget into the stone and keep the setting simple, you do that. If the stone budget is fixed and you want to maximise what it produces, we help you find the best available stone at that price. The budget conversation is explicit, not obscured by a display case price tag.
If you want a detailed breakdown of what different budgets produce in practice, our bespoke engagement ring pricing guide covers this in full. And if you want to start a conversation about your brief, get in touch — there is no commitment at that stage and no minimum spend.