An engagement ring, also called a betrothal ring, is a ring that shows the person wearing it is engaged to be married, especially in Western cultures. A partner gives an engagement ring to their future spouse when they propose marriage. This ring represents a formal agreement to get married in the future. In most Western countries, engagement rings are usually worn only by women and often have diamonds. In some countries, both partners wear matching rings, and engagement rings may also be used as wedding rings. In countries where English is widely spoken, the ring is usually worn on the left ring finger, but traditions differ around the world.

Engagement rings have been common in Western countries since at least the time of the Roman Empire. They began to include diamonds during the Renaissance, and this connection to diamonds became stronger after a marketing campaign by the De Beers Group between 1939 and 1979.

In some Christian traditions, engagement rings may be blessed and worn during a betrothal ceremony. However, during the wedding ceremony, when the groom places a wedding ring on the bride’s finger or the bride places one on the groom’s finger, no rings are worn. After the wedding, the engagement ring is sometimes worn again and is usually placed on the outside of the wedding ring.

History

The history of the engagement ring can be traced back to ancient Rome, though some sources credit the ancient Egyptians with inventing it and the ancient Greeks with continuing the tradition.

In many countries, engagement rings are placed on the left ring finger. This practice was once based on the belief that this finger had a vein (called the vena amoris) that connected directly to the heart. This idea was described by Henry Swinburne in his book A Treatise of Spousals, or Matrimonial Contracts (1686). The belief may have originated from an ancient Roman text, Attic Nights, which mentioned a "nervus," a word that can mean either "nerve" or "sinew."

Scholars now question the idea that engagement rings were originally part of a bride price, which was thought to represent the purchase of a bride.

In the second century BC, Roman women received two rings during engagements: a gold one worn in public and an iron one worn at home while doing household tasks. At one time, Roman citizens wore iron rings at home and gold rings in public. Over time, the right to wear gold rings was extended to senators, public officials, knights, and eventually to freedmen. During this period, women might receive both an iron and a gold engagement ring.

The mid-7th century Visigothic Code stated that once a betrothal ring was given or accepted as a promise, the engagement could not be broken, even without a written agreement.

In 860 AD, Pope Nicholas I wrote to Boris I of Bulgaria, explaining that in the Western church, the man gave his betrothed an engagement ring. At the Fourth Council of the Lateran in 1215, Pope Innocent III established the banns of marriage, requiring marriages to be announced publicly and banning secret marriages. Some scholars note this rule shares similarities with the engagement ring tradition described by Pope Nicholas I.

The first well-documented use of a diamond ring for engagement occurred in 1477, when Archduke Maximilian of Austria gave a diamond ring to Mary of Burgundy during their betrothal. This influenced wealthy individuals to give diamond rings to their loved ones.

During the Protestant Reformation, the wedding ring replaced the betrothal ring as the main symbol of marriage in many regions. In Catholic countries, this change happened later.

During the Age of Enlightenment, gimmal rings and posie rings were popular. Posie rings often expressed personal feelings rather than formal engagements.

In South Africa, diamonds were discovered in 1866 and identified as such in 1867. By 1872, diamond production reached over one million carats per year. As production grew, more people could afford diamond rings, though they were long considered a symbol of nobility and wealth.

In 1852, the Koh-i-Noor diamond was re-cut and placed in Queen Victoria’s crown, sparking a global interest in diamonds.

In the United States, diamond engagement rings became less popular after World War I and even more so during the Great Depression.

In 1938, the diamond company De Beers launched a marketing campaign that greatly influenced engagement rings. During the 1930s, diamond prices dropped, and engagement rings were losing popularity among younger people. Before World War II, only 10% of American engagement rings included diamonds. The campaign included teaching people about the "4 Cs" (cut, carat, color, and clarity) and introduced the slogan "a diamond is forever" in 1947. This effort aimed to make diamonds the only acceptable stone for engagement rings, increasing diamond sales in the U.S. from $23 million to $2.1 billion between 1939 and 1979.

Law professor Margaret F. Brining notes that the rise in engagement ring sales in the U.S. after 1945 was linked to the end of the "breach of promise" law, which allowed women to sue their fiancés for breaking engagements. This law was especially important for women who had been sexually intimate with their fiancés but were expected to remain virgins in marriage. After the law was abolished, engagement rings became a form of financial security for women, as they often kept the rings if the engagement ended.

In the early 21st century, the jewelry industry began selling engagement rings for men, sometimes called "mangagement rings."

Industry

In the 20th century, if a man could afford it, he usually chose and bought an engagement ring privately. He would then give it to the woman he wanted to marry when he proposed. In some countries, both partners may choose and buy matching rings together. In the United States and Canada, only women traditionally wear engagement rings, but sometimes women also give their partners an engagement gift.

Like all jewelry, the cost of an engagement ring depends on the materials used, the ring’s design, whether it has a gemstone, the gemstone’s value, and the seller. The price of gemstones depends on their type and quality. Diamonds are valued based on their carat weight, color, clarity, and cut. Other gemstones, like sapphires, rubies, and emeralds, use different systems. People may choose rings to honor family traditions, use family heirlooms, create a unique style, avoid harmful practices (such as those linked to blood diamonds or gold mining), match personal tastes, or control costs. Synthetic diamonds and substitutes like cubic zirconia and moissanite are also popular choices because they are affordable and socially responsible.

The idea that a man should spend a large part of his income on an engagement ring began with marketing by De Beers in the mid-20th century to sell more diamonds. In the 1930s, they suggested spending one month’s income on a ring. By the 1980s, they recommended two months’ income (three months in Japan). In 2012, the average cost of an engagement ring in the U.S. was $4,000. However, a 2015 study found that nearly a quarter of couples did not buy a ring, and about a third spent less than $2,000. Less than 15% spent $4,000 or more. In the UK, average costs range from £1,200 to £2,000. Research suggests that expensive rings may be linked to early divorces, possibly because spending over $2,000 can cause debt-related stress. Couples who spend less on rings and weddings tend to have longer marriages and lower divorce rates.

One reason for the popularity of expensive rings is their connection to marriage traditions and a woman’s future. In the U.S., until the 1930s, a man who broke off an engagement could be sued for damages, including costs for wedding preparations and lost marriage opportunities. If the woman had had sex with her fiancé, damages were higher. These laws were later changed, but social pressure remained strong. Diamonds became a way to provide financial security for women.

Buying engagement rings online is growing, which changes the diamond market by making it more transparent. Online retailers like Blue Nile, Brilliant Earth, and Costco are examples of this trend.

Engagement rings come in many styles. Gold (yellow, white, or rose) and platinum are common choices, but other metals like titanium, silver, and stainless steel are also used. This allows the person to choose a style that reflects their personality.

In the U.S., diamonds have been popular in engagement rings since the mid-20th century. Solitaire rings have one diamond. The most common setting is the solitaire prong setting, popularized by Tiffany & Co. in 1886. The brilliant cut is now the favorite for its sparkle. Other styles include rings with side stones or three stones (called trinity or trilogy rings), which symbolize past, present, and future.

A wedding set includes an engagement ring and a matching wedding band, sold together. Some wedding rings are incomplete until paired with the engagement ring. Others are worn separately but match in style. After marriage, the two rings may be welded together for convenience. A trio set includes a woman’s engagement ring, a woman’s wedding band, and a man’s wedding band, often with matching designs and lower prices.

In Nordic countries, both men and women wear engagement rings, usually plain gold bands. In the U.S., engagement rings often have a large center stone, while wedding bands are simpler. Both are worn together.

In North America and the UK, engagement rings are traditionally worn on the left ring finger. This custom dates to ancient times, with some believing the finger has a “vein of love” leading to the heart. In Germany, the ring is worn on the left hand during engagement and moved to the right after marriage. In Poland and Turkey, rings are traditionally worn on the right hand, though modern practices vary.

Tradition says that if a man breaks off an engagement, the woman is not required to return the ring. This reflects the ring’s role in protecting the woman’s reputation. Legally, this rule may vary depending on whether the man is held responsible for the breakup.