Queen Elizabeth's eldest grandson, Peter Phillips, is engaged to Harriet Sperling. The two announced that they had taken the next step in their relationship on August 1, 2025. The royal proposed with a three-stone diamond engagement ring that's estimated to cost $42,000.

Royal family member Peter Phillips chose a "timeless" engagement ring to propose to his now fiancée, Harriet Sperling, that is worth upwards of $20,000 AUD.