If you're anything like us, then half the excitement of a celebrity engagement is catching sight of the ring – and Joey King's did not disappoint.

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The Kissing Booth actress, 22, proudly showed off her ultra-unique rock given to her by her longtime boyfriend Steven Piet as she announced the exciting news to her Instagram followers. So how much is her elongated oval diamond from Mociun worth? Experts predict anything between $30,000 and £120,000!