People lost their minds in 1981 when Lady Diana Spencer married Prince Charles. The dress! The ring! People couldn’t get enough of the romance—and you’ve likely seen approximately two hundred million pictures from that day since as a result.

But I dove deep into the archives to find some photos you probably HAVEN’T seen before. Prepare yourself for some serious gems.

The engagement ring of the century (yep, the same sapphire sparkler that Kate Middleton now totes around) made its debut when Prince Charles and Lady Diana Spencer announced their engagement on the grounds outside of Buckingham Palace.

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