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The engagement ring hasn't always sparkled with brilliance. In its earliest form, it was a simple iron band - plain, almost austere. The tradition dates back to ancient Rome, where rings given as pledges of a wedding promise were first made of iron, then gradually of gold. The circle already carried its symbolism: a line with no beginning and no end, the image of a love without limit.
The turning point came in 1477. It was Archduke Maximilian of Austria who sparked a new tradition by presenting Mary of Burgundy with a diamond engagement ring set with stones forming an "M." The diamond, chosen for its exceptional hardness, became a symbol of fidelity. Yet for three more centuries, this gesture remained the privilege of royal courts - deposits were scarce and the stones were prohibitively expensive.
Everything changed in the mid-19th century. Miners discovered major deposits in South Africa, and diamond engagement rings gradually became accessible to a much wider public. But it was one advertising campaign that sealed the shift for good: in 1947, the tagline "A Diamond Is Forever," created for De Beers, turned the diamond ring into a universal symbol. Within twenty years, 80% of American brides were wearing a diamond - cementing a tradition that endures to this day.
In the 2010s, that momentum eased slightly: couples began gravitating toward other forms of luxury, colored stones, and more personal jewelry. Today's engagement ring no longer follows a single template. What hasn't changed is what it means: a promise chosen, given, and worn.
A fun fact: in 1796, Napoleon Bonaparte proposed to Joséphine with a "Toi et Moi" ring featuring a sapphire and a diamond set side by side. This historical detail speaks volumes about the staying power of certain styles - some designs simply never go out of fashion.
Engagement rings come in a handful of major families. Knowing the vocabulary lets you quickly zero in on what suits a particular style, without getting lost in a catalog.
Everything comes down to a single stone, set high on a plain band. The choice here is really about the stone itself - the setting simply elevates it. This is the style that ages best and pairs most naturally with any wedding ring. The classic solitaire suits every taste and complements all wedding rings effortlessly.
Same structure as a solitaire, but the band is lined with small paved diamonds set along all or part of its circumference. The pavé adds extra sparkle that beautifully enhances the center stone. Note: a pavé ring requires more attentive care than a plain band, and resizing can be more complex depending on the model.
The halo plays on optics: a circle of small diamonds surrounding the center stone makes it appear larger than it actually is. It's the option to consider when you want to maximize visual impact without necessarily increasing the budget on the center carat. It works equally well with a white diamond or a colored stone, giving the latter a beautifully refined look. The result is sophisticated, with a faintly vintage character depending on the setting chosen.
Two stones flank the center stone on either side, in a symmetry reminiscent of the fine jewelry compositions of the 1920s-1940s. These rings typically carry a retro, Art Deco charm that appeals to those drawn to vintage-inspired jewelry. The three-stone solitaire offers a compelling visual presence without reaching the boldness of a halo.
Two stones, side by side, forming a single piece of jewelry. That is its power: each stone tells a story about one person, and together they tell a shared one. The choice of both stones - their nature, their color, their respective sizes - is precisely what makes this style so personal. Two matching diamonds or a diamond paired with a colored stone: every combination produces a different piece of jewelry.
Where the halo builds a continuous frame around the stone, the daisy ring creates something more distinctive: separate petals that give the jewelry the shape of a flower. The difference is subtle to describe, immediate to see. These are two distinct aesthetics, two distinct intentions - one mineral, the other botanical. It works especially well with colored center stones, whose vivid hues contrast with the sparkle of the diamond petals to amplify the botanical effect.
Asymmetric shapes, architectural lines, unexpected settings, multiple stones - the creative ring breaks with convention to offer a truly one-of-a-kind jewelry piece. It's made for those who want a piece of jewelry that is genuinely theirs, even if it means stepping away from traditional codes. Best worn alone, or paired with a simple wedding ring.
The stone is the heart of the engagement ring. It captures the light, carries the symbolism, and often drives the budget.
The natural diamond - timeless and symbolic of purity - continues to dominate the choice. It embodies absolute brilliance: its unmatched sparkle makes it the most luminous stone there is. A white diamond pairs with everything, from everyday wear to special occasions, and it is unrivaled in hardness at 10 on the Mohs scale. For all these reasons combined - brilliance, versatility, durability, and symbolism - it remains the ultimate benchmark.
Important distinction: diamond is the hardest material known - nothing can scratch it except another diamond. But that does not make it indestructible: a hard impact at the right angle can cause it to cleave. Avoid wearing your ring for DIY projects, gardening, or workouts at the gym.
There are 4 internationally recognized quality criteria for diamonds, known as the "4Cs": Carat, Color, Clarity, and Cut. Understanding them helps you compare stones and make smart trade-offs within your budget. For a deeper dive, check out our complete diamond guide.
Carat - the weight. One carat equals 0.20 grams. The word traces its origins to the Arabic term "qirat," the seed of the carob tree, which served as a weight standard in antiquity. The higher the carat, the larger the stone - and its price grows exponentially, not linearly. In Europe, diamonds for engagement rings commonly weigh between 0.30 and 1 carat.
Color - the absence of tint. Color is graded on a letter scale from D (most colorless) to Z (most yellow). For a ring in white gold or platinum, colors D through H are ideal. In yellow gold or rose gold, shades H through J blend better, as the warm metal masks slight tints.
Clarity - internal purity. Diamonds almost always contain small inclusions, traces of their formation deep within the earth. For an engagement ring, a clarity grade of VS2 or higher is recommended: imperfections are invisible to the naked eye, without paying a premium for higher grades.
Cut - the only human variable. The cut determines how the stone reflects light. Experts recommend prioritizing an Excellent cut first, then adjusting the carat weight accordingly. A well-cut stone will appear more brilliant than a heavier stone with poor proportions.
For any center diamond above 0.30 carats, a certificate from a recognized independent laboratory is essential. The two global references are the GIA (Gemological Institute of America) and the HRD (Hoge Raad voor Diamant, Antwerp). This document is the stone's identity card: it guarantees its 4Cs as objectively measured and protects against fraud.
At Ocarat, center diamonds above 0.30 carats come with a GIA or HRD certificate. Ocarat is not itself a certifying body: the stones are certified upstream by these independent laboratories, which guarantee their authenticity.
White diamonds are no longer the only option! More and more couples are opening up to alternatives, with each precious stone carrying its own symbolism and its own color palette.
Engagement Rings with Sapphire, Emerald, Ruby, Aquamarine, Morganite, and Tanzanite
Sapphire (hardness 9/10) is the most versatile colored stone for everyday jewelry. Its resistance to wear is close to that of a diamond. It comes in a far wider color spectrum than most people realize - from deep blue to pale pink, yellow, and white.
Emerald (hardness 7.5/10) requires more care than sapphire or diamond - its setting must be chosen to protect it. In return, it is the stone that delivers the most intense and distinctive color. Every natural emerald is unique, with its own internal inclusions - what gemologists call the stone's "garden."
Ruby (hardness 9/10) shares with sapphire the same durability and the same mineralogical family - corundum. What sets them apart is color alone: chromium gives ruby its characteristic red. It is the only one of the four precious stones with no neutral color variant - choosing a ruby means choosing a bold, assertive hue.
Aquamarine, morganite, and tanzanite round out this palette for more original options. For everyday wear, keep one practical rule in mind: choose a stone with a minimum hardness of 7 on the Mohs scale, and a setting that offers the stone good protection.
The metal determines the overall color of the jewelry, its aesthetic longevity, and how it ages over time.
For a detailed overview of each metal and its properties, explore our precious metals guide.
Engagement Rings in White Gold, Yellow Gold, Rose Gold, and Platinum
White Gold - neutral and luminous, it showcases diamonds and light-colored stones beautifully. Its silver tone is achieved through rhodium plating, a surface coating that gradually wears off and needs to be renewed every 2 to 3 years by a jeweler.
Yellow Gold - the historic metal of fine jewelry, warm and timeless. Its color does not tarnish over time with no special upkeep required. Particularly flattering on olive skin tones, it has made a strong comeback in recent years. Our gold guide covers all its nuances (750 gold, 375 gold).
Rose Gold - romantic and contemporary. Its hue is stable over time with no surface treatment needed. It pairs beautifully with pink stones (morganite, pink sapphire) and flatters fair and rosy complexions.
Platinum - naturally white, 95% pure, with no rhodium plating required. It keeps its color indefinitely and develops a subtle matte patina over time. Heavier and more expensive than gold jewelry, it's the choice for those who demand the very best. Hypoallergenic and ideal for sensitive skin. To learn more, explore our platinum guide.
Metal quality determines the durability of the jewelry. 750/1000 Gold (18K) is recommended for everyday wear: it resists wear and oxidation better than 375/1000 Gold (9K). The latter remains accessible and suits certain budgets, but it ages differently.
This is worth thinking about from the moment you choose the engagement ring, even if the wedding is still far off. In France, both pieces of jewelry are traditionally worn on the left ring finger. The wedding ring goes on first, closest to the heart, with the engagement ring worn on top.
In practice, it all comes down to proportions. An engagement ring with a high or very large center stone does not always allow a straight wedding ring to sit flush against it without a gap. Two solutions exist: a contoured wedding ring (designed to hug the sides of the engagement ring), or wearing the two pieces of jewelry on different hands - which is actually what many people choose to do.
Explore our collection of wedding rings to find the perfect match for your ring.
If wearing both rings on the same finger matters to you, it's worth planning ahead: choose a ring with a straight band and a reasonably sized stone, or try both pieces of jewelry together before purchasing the wedding ring.
Metal tip: keep the colors consistent. A white gold ring and a yellow gold wedding ring will age differently and create an unintended contrast over time. If you want two distinct metals, make it a deliberate, clearly visible contrast. White gold and rose gold, for example, work beautifully together.
This is often the biggest source of anxiety when choosing alone. Here are a few reliable approaches.
Discreetly borrowing a ring worn on the left ring finger remains the most reliable method. A jeweler can measure the size precisely in a matter of seconds - without stretching or damaging the ring.
The ring sizer: Ocarat offers a plastic ring sizer to order, or a free printable ring sizer. Be sure to print at actual size (100%) and take measurements at room temperature - fingers can vary slightly with heat or physical activity.
Estimation by description: overall build, finger morphology (slender, wide), wrist thickness. An experienced jeweler can make a surprisingly accurate estimate from these details alone.
In any case, check before purchasing that the model you choose can be resized after delivery. Ocarat offers resizing on the vast majority of solitaires; the process is more complex on full pavé rings or certain creative models with unusual bands - feel free to contact customer service to confirm before placing your order.
There is no universal rule on how much to spend. The American "3 months' salary" convention is a marketing construct from De Beers, not a tradition. In France, each couple makes a choice based on their own means and values.
To shop with confidence, it's more useful to understand how a price is built than to rely on fixed price ranges - gold and diamond markets fluctuate regularly, and prices adjust accordingly. Here are the real factors at play:
| Your Profile | Recommended Metal | Recommended Shape | Finish |
|---|---|---|---|
| Olive or Tanned Skin Tone | 750 Yellow Gold | Comfort Half-Band | Polished |
| Fair or Rosy Skin Tone | White Gold, Rose Gold, or Platinum | Band or Half-Band | Polished or Satin |
| Contemporary Style | White Gold or Rose Gold | Band | Satin / Brushed |
| Timeless Classic Style | 750 Yellow Gold | Comfort Half-Band | Polished |
| Very Active Lifestyle | Yellow Gold, Platinum, or Titanium | Band or Half-Band | Polished |
| Minimalist Engagement Ring | White Gold + Diamonds | Pavé Half-Band | Polished |
| Embellished Engagement Ring | Plain Gold | Comfort Half-Band | Polished or Satin |
| Budget-Conscious | 375 Gold or 925 Silver | Band or Half-Band | Polished |
| Maximum Quality | 950 Platinum | Your Choice | Polished |
Metal tip: keep the colors consistent. A white gold ring and a yellow gold wedding ring will age differently and create an unintended contrast over time. If you want two distinct metals, make it a deliberate, clearly visible contrast. White gold and rose gold, for example, work beautifully together.
Here is a quick reference guide to help match the ring to the wearer's personal style:
| Parameter | Price Impact |
|---|---|
| Carat Weight | Exponential growth: doubling the carat multiplies the price by 4 to 5 at equal quality |
| Color (D to Z) | A jump of just a few letter grades can mean a significant price difference - the impact grows with the size of the stone |
| Clarity (IF to SI) | The gap between a very high clarity grade (IF) and a standard grade (VS2) can be meaningful on stones that look visually similar to the naked eye |
| Cut | An Excellent cut versus an average cut makes a noticeable difference at equal weight - it is the criterion that influences the beauty of the stone the most |
| 750 Gold vs 375 Gold | 750 gold costs more upfront but holds up better over time - a price difference that pays for itself over years of wear |
| Platinum vs White Gold | A platinum jewelry piece is noticeably more expensive at equivalent weight, for a metal that is naturally white with no rhodium plating |
| Setting Style | Simple solitaire: the most affordable setting. Full pavé or halo: more labor-intensive setting, higher price |
Ocarat offers a wide selection of engagement rings - diamond solitaires, multi-stone rings, and colored precious stones - in yellow gold, rose gold, white gold, and platinum. Free shipping in mainland France and Belgium, with the option to pay in 4 interest-free installments.
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