1. Beyoncé's emerald-cut engagement ring — estimated cost: $5 million.
2. Emma Stone's pearl engagement ring — estimated cost: $4,780.
3. Paris Hilton's emerald-cut engagement ring — estimated cost: $1 million.
4. Pamela Anderson's tattoo engagement ring — estimated cost: between $50 and $300.
5. Ciara's cushion-cut engagement ring — estimated cost: between $2 million and $2.5 million.
6. Halle Berry's emerald engagement ring — estimated cost: $4,400.
7. Blake Lively's oval-cut engagement ring — estimated cost: $2.5 million.
8. Michelle Obama's round-cut engagement ring — estimated original cost: $10,000.
9. Jennifer Lopez's emerald-cut engagement ring — estimated cost: $1.8 million.
10. Keira Knightley's brilliant-cut engagement ring — estimated cost: $40,000
11. Gabrielle Union's cushion-cut engagement ring — estimated cost: $1 million.
12. Priscilla Chan's ruby engagement ring — estimated cost: $25,000.
13. Kourtney Kardashian's oval-cut engagement ring — estimated cost: between $500,000 and $1 million.
14. Julia Stiles' rose-cut engagement ring – estimated cost: $35,000.
15. Ariana Grande's angled oval-cut engagement ring — estimated cost: $750,000.
16. Cardi B's pear-cut engagement ring — estimated cost: $500,000.
17. Emily Ratajkowski's pear and square-cut engagement ring — estimated cost: between $50,000 and $90,000.
18. Lady Gaga's heart-shaped engagement ring — estimated cost: $500,000
19. Anna Paquin's moonstone engagement ring — estimated cost: $100.
20. FKA Twigs' unique bow-shaped engagement ring — estimated cost: $150,000.
Note: The ring costs listed are estimates, not official pricing.