The engagement ring Hilary Duff received from her professional hockey player fiancé Mike Comrie is a great example of a celebrity engagement ring. The 14 carat princess-cut jewel reportedly cost one million dollars, according to eOnline and US Magazine.
You can find a similarly styled cubic zirconia and sterling silver ring from emitations for around $160.
Former Spice Girl (Ginger Spice) Geri Halliwell received a $310,000 Asscher-cut diamond solitaire engagement ring from fiancé Fabrizio Politi, owner of an Italian yacht company, according to People.
Aascher cut solitaires are widely available. If you're looking for an inexpensive replica of Ginger Spice's ring, you can find a Swarovski crystal zirconia fashion ring on Amazon for less than $100.
Natalie Portman's husband Benjamin Millepied, a professional dancer and model, designed her eco-friendly ring himself. According to InStyle.com, the ring's center stone is antique, the accent stones are from a conflict-free mine and the band is recycled platinum. The ring's value is estimated at $35,000.
Bling & Jewelry carries a fashion ring designed in the style of Portman's ring for under $50.
Country superstar Carrie Underwood's engagement ring from professional hockey-player husband Mike Fisher features a flawless yellow diamond. According to US Magazine, the ring was designed by Jonathon Arndt and cost about $150,000.
You can find a fashion ring styled like Underwood's ring from Fantasy Jewelry Box for just under $100.
Kate Middleton, also known as Prince Catherine now that she is married to Prince William, wears the ring that Price Charles gave to Princess Diana in 1981. The lovely ring features an 18-carat sapphire center stone encircled by 14 diamonds. According to a Huffington Post article, the ring cost £30,000 at the time of purchase.
You can order a similar style ring from The Bradford Exchange done in sterling silver with a created sapphire and simulated diamonds for just under $100.
Big, expensive diamond rings don't guarantee a happy ending for relationships, celebrity or otherwise. Crystal Harris received a $90,000 3.39 carat circular cut diamond solitaire engagement ring from ex-fiancé Hugh Hefner. According to TMZ, Harris auctioned off the ring through Christie's for $38,000 after calling off the wedding.
You can find a fashion ring designed to look like Harris' from emitations Celebrity Style Jewelry for around $100.
The 20.5 carat total weight engagement ring Kim Kardashian received from short-time husband Kris Humphries is worth $2 million, according to TMZ. The center stone is 16.5 carats and its flanked by two 2-cart stones. According to a November 2012 Huffington Post story, Kardashian is refusing to return the ring to her former husband, even as rumors about a possible impeding engagement to Kanye West are swirling from sources like Hollywood Life.
See Eve's Addiction for a similar style done in cubic zirconia and sterling silver for just over $50.