> An engagement ring comes down to four decisions: the stone (usually a diamond, judged on the 4Cs), the metal (white, yellow or rose gold, or platinum), the

*Source : https://meilleures-bijouteries.fr/en/guides/choose-engagement-ring/*

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● Guide

# How to choose an engagement ring

Published on **10/02/2026** · By **Sébastien Joumel**

In brief

**An engagement ring comes down to four decisions: the stone (usually a diamond, judged on the 4Cs), the metal (white, yellow or rose gold, or platinum), the setting (solitaire, pavé, trilogy) and the finger size.** Budget is a matter of priorities: a smaller, well-cut diamond outshines a larger, dull one. In store, always ask to see the stone in daylight and insist on an itemised invoice.

## The stone: understanding the 4Cs

Most engagement rings are set with a **diamond**, graded on the **4Cs**: _Carat_ (weight), _Colour_ (D, colourless, to Z), _Clarity_ (inclusions, FL to I) and _Cut_ (proportions and polish). Cut is what gives the sparkle: a well-cut diamond returns light, while a larger but poorly proportioned stone looks lifeless.

For a given budget, a sound compromise is an excellent cut, a colour around G-H (white without a premium) and VS clarity (inclusions invisible to the naked eye). Lab-grown diamonds — chemically identical to natural ones — buy a larger stone for the same money; that is a valid choice as long as it is stated on the invoice.

## Metal and setting

The metal choice is both aesthetic and practical. **White gold** and **platinum** flatter a colourless diamond; **yellow** and **rose gold** warm a slightly tinted stone. Platinum is denser and tougher but costs more; white gold needs **rhodium plating** refreshed every few years.

For the setting, the **solitaire** (one stone on a band) is the classic; a **pavé** adds small diamonds along the band; a **trilogy** (three stones) symbolises past, present and future. The height of the setting affects everyday comfort.

## Finger size and the element of surprise

If the proposal is a surprise, measuring the finger size without giving it away is the real challenge. Discreetly borrow a ring already worn on the same hand, or ask a jeweller: most **resize for free** or at low cost afterwards. A slightly loose ring is easily tightened.

## Buying in store: the right reflexes

Compare at least two shops. Ask to **see the stone in daylight**, from several angles, and under a loupe for inclusions. Insist on an **itemised invoice** listing the 4Cs, the metal and its fineness, plus a **certificate** (GIA, HRD or IGI) for significant diamonds. Check after-sales terms: resizing, re-tipping the prongs, rhodium plating. A good jeweller advises without pressure and gives you time to decide.

## Frequently asked questions

What budget should I plan for an engagement ring?

There is no official rule: the old 'one to three months' salary' idea was an advertising invention. Set a comfortable budget and trade off by priority (diamond size vs cut quality vs metal). A well-cut modest stone often looks better than a large mediocre one.

Do I need a certificate for the diamond?

For a diamond above roughly 0.30–0.50 carat, an independent lab certificate (GIA, HRD, IGI) guarantees the stated 4Cs. It protects your purchase and makes insurance and resale easier.

Natural or lab-grown diamond?

Both are real diamonds, chemically identical. A lab-grown stone costs far less for the same quality, buying a larger stone. Natural diamonds keep a higher symbolic and resale value. It is a personal choice — what matters is that it is clearly stated on the invoice.

## Read also

[

Guide

Which finger does the engagement ring go on?

](https://meilleures-bijouteries.fr/en/guides/engagement-ring-which-finger/)[

Guide

Wedding ring: which hand and which finger?

](https://meilleures-bijouteries.fr/en/guides/wedding-ring-which-hand/)

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