This Is the Average Engagement Ring Size in 2019

Our new study reveals exactly how engagement rings are sizing up (carat-wise) across the country right now.
Sophie Ross and Sarah Hanlon
by Sophie Ross and Sarah Hanlon
Updated Nov 07, 2019

While you might not know exactly how much your engagement ring costs, you're probably well aware of its carat size. And if you're curious about how yours compares to the average engagement ring size in the United States, we have the answer. The Knot 2019 Jewelry and Engagement Study surveyed over 21,000 recently engaged or married couples across the country to identify the top proposal trends—and the results might surprise you. 

When it comes to diamond details, carat size is one of the 4 C's that classifies a stone (along with cut, color and clarity). The gem's carat is the unit that measures its weight—the bigger the number, the bigger the rock. According to our study, the average engagement ring size falls between one to one-and-a-half carats. Roughly half of all engagement rings fall between one and two carats, with just 25 percent of rings sizing above two carats. 

However, our findings show that the average engagement ring size isn't the most important factor to the couple. Surprisingly, it's actually the style and setting of the stone. Round-cut diamonds continue to be the most popular shape, with nearly half of all rings falling into this category (a consistent trend since 2015). White gold continues to be the most popular metal setting at 54 percent, while rose gold comes in as the second most popular at 14 percent. 

Personalized details continue to grow in significance to couples with just over half of all proposers adding custom details to an existing ring design. Thirty-one percent of those surveyed created a completely-unique jewel from scratch. 

Even with these sentimental touches, the average spend is down from the national average in 2017. Now, the average cost of an engagement ring is $5,900. Of course, this price tag varies according to region (the average spend in the mid-Atlantic region is $7,500, while the Midwest averages $5,300), but some couples opt for diamond alternatives that help lower costs. Ten percent of all engagement rings are categorized as precious stones, with options like Moissanite, Sapphire and Morganite ranking as the top three in this category.

With so many options to choose from, finding the perfect engagement ring might seem like a daunting task. But  95 percent of respondents said their engagement ring was exactly what they wanted. (Perhaps because 77 percent of proposees admitted to dropping hints in advance.) 

The moral of the story is an engagement ring is a pricey (and important) purchase, no matter the national average engagement ring size, cost and more. Before you and your partner get engaged, make sure you approach the process with what works best for you. This includes setting a budget, ensuring you're well-versed in gem jargon, and exploring a variety of options before making any decision.

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