The short answer: the first well-documented diamond engagement ring was given in 1477, but diamond engagement rings only became a mass expectation in the middle of the twentieth century. Almost everything people assume is ancient tradition is actually about eighty years old.

Here is how it actually happened, with the dates that are reasonably well established and a clear note where the popular story is shakier than it sounds.

A timeline

Period	What happened
Ancient Rome	Betrothal rings appear in Roman custom — often plain iron for the home and gold for public wear. No diamonds; the technology to cut them did not exist.
Medieval Europe	Rings become part of the betrothal contract. Gimmel rings (two interlocking bands) and posy rings, engraved inside with a short line of verse, are common.
1477	Archduke Maximilian of Austria gives Mary of Burgundy a ring set with thin, flat diamonds arranged in an M. This is the earliest firmly documented diamond betrothal ring.
1500s–1700s	Diamond rings spread among European nobility. Cutting improves — table cuts, then rose cuts, then early brilliant cuts. Still far out of ordinary reach.
1800s	Victorian engagement rings favour coloured stones, pearls, and sentimental designs. Diamonds are one option among many.
1870s	Large diamond deposits are found in South Africa. Supply increases enormously, and the industry consolidates to manage it.
1886	Tiffany introduces the raised six-claw solitaire setting, lifting the stone off the band so light can enter from the sides. The modern solitaire is born.
1938–1947	De Beers begins a sustained advertising campaign in the United States. The line “A Diamond Is Forever”, written by copywriter Frances Gerety in 1947, becomes one of the most effective slogans ever produced.
1950s–1990s	The diamond engagement ring becomes the default across the English-speaking world, then in Japan and beyond. Spending guidelines — one month’s salary, later two — are promoted as part of the same marketing effort.
2010s onward	Lab-grown diamonds move from industrial use to jewellery at scale, changing what a given budget buys.

The 1477 ring, in more detail

Maximilian, son of the Holy Roman Emperor, was advised to give Mary of Burgundy a diamond ring as part of an urgent political marriage. The stones were small, flat and unpolished by modern standards — diamond cutting was in its infancy, and the appeal was as much the material’s legendary hardness as its sparkle.

It matters because it is documented. A great deal of what is written about earlier diamond engagement rings is repeated without a source.

Two stories you should treat carefully

The vein of love

The claim that the fourth finger of the left hand carries a vein running directly to the heart — the vena amoris — comes from ancient Roman and Egyptian belief. It is charming and it is not anatomically true. Every finger’s veins return to the heart.

“Ancient Egyptians invented the engagement ring”

You will see this stated confidently everywhere. The evidence is much thinner than the confidence suggests. Rings were certainly worn in ancient Egypt and carried meaning, but the direct line from there to the modern engagement ring is largely a later invention.

We would rather tell you the record is unclear than repeat a nice story as fact.

Why the twentieth century mattered more than the fifteenth

Two things had to happen before an ordinary couple could own a diamond ring: supply and desire.

Supply arrived with the South African discoveries of the 1870s, which turned diamonds from genuinely scarce to merely controlled. Desire was manufactured deliberately from 1938 onward, through film placements, fashion coverage, education programmes in schools, and the “A Diamond Is Forever” campaign.

The salary guidelines belong to the same effort. A rule of thumb in the trade, not a measured figure — and certainly not an obligation. Anyone quoting you a percentage of your income as though it were a standard is repeating advertising copy from the middle of the last century.

What the history is actually useful for

Knowing this changes how you shop, in a good way.

• You are not breaking a tradition by choosing a coloured stone, a plain band, or a smaller diamond. The tradition you would be breaking is younger than the NHS.
• Older cutting styles are still available and look genuinely different. Rose cuts, which date to the sixteenth century, have a flat back and a domed top of triangular facets — a soft, candlelit glow rather than a bright flash.
• The raised solitaire is a design decision from 1886, not an eternal form. Bezels, low settings and cluster designs all have longer histories.

If the older styles appeal, our Vintage Pear Rose Cut Engagement Ring (£1,237, correct at the time of writing) uses that antique rose-cut approach, and the Vintage Round Cut Engagement Ring in Yellow Gold (£1,051) borrows from the detailed metalwork of earlier eras. For the 1886 classic itself, the Solitaire Round Cut Engagement Ring in White Gold (£563) is the straightforward modern version.

You can see the whole range in our engagement ring collection, or filter to round stones if you want the shape the twentieth century made famous.

Where lab-grown fits in

The most recent chapter is the one we work in. Lab-grown diamonds are the same material as mined ones — the same crystal structure, the same hardness, the same look — grown in a matter of weeks rather than found. They have been used industrially since the 1950s and have only become viable for fine jewellery relatively recently.

The practical effect is that the size and quality that were out of reach for most couples in 1947 are now affordable. In a sense the campaign’s promise finally applies to everybody, rather than to the people who could pay 1947 prices.

Frequently asked questions

When did diamond engagement rings start?

The first documented diamond betrothal ring dates to 1477. Their spread to ordinary buyers took until the mid twentieth century, driven by increased supply from the 1870s and sustained advertising from 1938 onward.

Who invented the diamond engagement ring?

Nobody invented it in a single moment. Maximilian of Austria’s 1477 ring is the earliest clear example, and the modern mass tradition was shaped by De Beers advertising from the late 1930s.

How long have engagement rings existed generally?

Betrothal rings go back at least to Roman times, roughly two thousand years. Diamonds are a comparatively recent addition to a very old custom.

Is the “two months’ salary” rule real?

It is a marketing guideline that originated with diamond advertising, not a measured standard or any kind of etiquette. Spend what suits your circumstances.

Why the left ring finger in the UK?

Custom, reinforced by the vena amoris story. It is not universal — Germany, Norway, Russia, Poland and India, among others, traditionally use the right hand.

Did the ring always come before the wedding band?

The two-ring pattern for the bride is largely a twentieth century development in Britain and America. Before that, one ring was common, and men’s wedding rings only became widespread around the Second World War.

If you like the idea of a ring that nods to a particular period, we design bespoke at no extra design cost — historical styles are among the most enjoyable things we get asked to make.

More guides on this topic

• Which Way Round Do You Wear Wedding and Engagement Rings?