With Valentine's Day ahead, we took a look at the average engagement ring price by state, which ranges from $3,005 to $10,109, according to diamond retailer Ritani.

People in Washington spend the most on engagement rings, while those in South Dakota spend the least.

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Engagement season typically runs from Thanksgiving through Valentine's Day, and with the latter holiday just around the corner, proposals are about to reach their peak.

The average American spends $7,750 on an engagement ring. That's according to online diamond retailer Ritani, which specializes in engagement rings. They took an even deeper dive into the statistics to find the average price paid for an engagement ring across the US in 2019. The range is wide — engagement rings in South Dakota sold for $3,005 on average, but those bought in California were worth nearly five figures.

But many factors go into pricing a diamond engagement ring. Diamonds are graded and priced based on the "four Cs," which are cut, carat, color, and clarity. Each of those can affect the price. A 1-carat round-shaped diamond with an "ideal" cut grade, for example, can range from about $2,000 up to $12,857 at Ritani depending on its grade for clarity and color.

Below we've ranked the average amount of money spent on an engagement ring in each state, from lowest to highest.

Sarah Jacobs previously contributed to an earlier version of this article.