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In his Instagram post, Simon shared several photos of the happy couple and a close-up of Williams' new massive emerald-cut engagement ring positioned atop a thin band featuring pavé diamonds.

The aquamarine ring features an emerald cut aquamarine flanked by small solitaire diamonds, and is set on a 24-carat yellow gold band. It was made by Asprey in 1996 and is estimated to be worth ...

From the emerald-cut diamond ring to the bended-knee proposal, get all the details about the couple's big commitment Michelle Tauber is an Executive Editorial Director at PEOPLE, overseeing ...