• Although the aesthetic of engagement rings is important, they also need to be designed to last. • Private jeweler Anna P. Jay said some of the most popular engagement ring styles are impractical. • Engagement rings with ultra-thin bands and rings with U-prong settings aren't durable.

If you've ever admired someone's engagement ring, you've likely oohed and aahed over the size or shine of "the rock," as many like to call it.

The design of the diamond or other gem is a key part of most engagement rings, but the whole ring needs to be durable since it's typically worn every day.

However, some of the most popular engagement ring styles throw practicality out the window in favor of aesthetics.

Business Insider spoke to Anna P. Jay, a private jeweler based in Nantucket, Massachusetts,

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