World’s Most Expensive Diamond Engagement Rings Facebook Prev Article Next Article 6. Jennifer Lopez’s Engagement Ring: The engagement ring remains the product of Neil Lane. It a blue diamond presented to Jennifer Lopez by Marc Anthony. The ring costs $4 million. Previous 1 2 3 4 5 6 7 8 9 10Next Prev Article Next Article Related Posts Best Exercises for Women World’s most expensive diamonds Top 10 Most Expensive Watches Over $1 Million 10 Veggies That Burn Belly Fat Most Expensive Wedding Dresses 15 Yummy Healthy Breakfast Under 400 Calories