The Most Expensive Celebrity Engagement Rings

7. Melania Knauss’ Engagement Ring From Donald Trump – $3 million

While Donald Trump’s New York home is practically drowning in gold, the businessman went for the subtle approach when he proposed to Melania Knauss, spending “only” $3 million on the ring. It’s still one of the most expensive celebrity engagement rings of all time. The piece was created by House of Graff and features a 15-carat emerald cut diamond set in platinum.