Engagement Ring

Engagement Ring: The Stone Comes First

The engagement ring is the first visible sign of a commitment, worn daily for years even before the wedding band. The choice comes down to three concrete factors: the stone, the metal of the setting and the type of mounting. The diamond solitaire remains the most requested style, but colored gemstones, emerald, sapphire or ruby, win people over with their unique hue and history.

The Diamond and the 4C Rule

A diamond is judged on four technical criteria, known as the 4Cs: carat (weight), cut, color and clarity. A carat measures 0.20 grams; a 1-carat diamond therefore weighs 0.20 g, regardless of its visual size, which also depends on the cut shape (round, oval, cushion, emerald cut). Color is graded on a scale from D, completely colorless, to Z, tinted yellow: the closer the letter is to D, the more valuable the stone. Clarity is assessed by the number and size of inclusions visible under 10x magnification: the fewer there are, the purer the diamond is graded.

White diamonds dominate the engagement ring market, but they also come in yellow or pink shades, rarer and therefore more expensive for equivalent quality. For a controlled budget, a diamond with a J or K color grade paired with SI (slightly included) clarity still looks clean to the naked eye while remaining more affordable than a D-IF diamond.

The Solitaire Ring: A Timeless Choice

The solitaire, a single stone mounted on prongs on a slim band, remains the style worn most often day-to-day: discreet, easy to pair later with a diamond wedding band, and unobtrusive for a hand that works. Its apparent size depends on the chosen carat but also on the width of the band: a slim setting makes the stone look more imposing than a wide one.

Colored Gemstones: Emerald, Sapphire, Ruby

Emerald: Green and Delicate

The emerald belongs to the beryl family, like aquamarine, but its green color comes from traces of chromium or vanadium present during its formation. It is a relatively soft stone, between 7.5 and 8 on the Mohs scale versus 10 for diamond, prone to chipping: it is almost always cut into a rectangle with cut corners, a shape known as an “emerald cut” that protects its most fragile edges.

Sapphire: Blue and Durable

Sapphire and ruby are both corundum; only the coloring differs depending on the elements present during the crystal’s formation, iron and titanium for sapphire’s blue, chromium for ruby’s red. Sturdy, at 9 on the Mohs scale, sapphire can be worn without special precautions. The ring Prince Charles gave Diana Spencer in 1981, a Ceylon sapphire surrounded by diamonds, later used by Prince William for his proposal to Kate Middleton in 2010, revived demand for this stone well beyond the classic blue: sapphire also comes in pink, yellow or purple, with prices varying significantly depending on the intensity of the color.

Ruby: Red and Rare

Ruby of the quality known as “pigeon’s blood,” an intense red with no orange or purple undertone, ranks among the most sought-after colored gemstones per carat, sometimes surpassing certain diamonds. Its hardness, close to that of sapphire, makes it a durable choice for everyday wear without risk of premature scratching.

Setting Metal and Mounting

Three metals cover most engagement ring settings: 18-carat yellow gold (750/1000 pure gold), 18-carat white gold (alloyed gold then rhodium-plated for its silvery hue) and platinum, denser and more wear-resistant but also heavier to wear daily. The setting style changes the stone’s look: prong-set, it catches more light; bezel-set, it is protected all around, a sensible choice for active hands; pavé-set, small diamonds cover the band around the central stone. A matching women’s wedding band is often chosen in the same metal, for a stacked look with no contrast in tone.

• Prong setting: maximum light on the stone, less protection from knocks
• Bezel setting: stone encircled by metal, enhanced protection, reduced side sparkle
• Pavé setting: band covered in small diamonds, added volume effect around the central stone

After the Proposal: Thinking About the Wedding Band

The engagement ring precedes the wedding band by several months, sometimes several years: the metal chosen for the first often determines that of the second. A white gold women’s wedding band naturally pairs with a solitaire in the same metal, while a men’s wedding band is chosen mainly on width and comfort, independent of the bride’s ring. Some couples order both bands together to guarantee an exactly matching gold tone, a detail that is most noticeable in daylight and that avoids unpleasant surprises on the big day.