Here's a much higher quality look-a-like. It's available at BlueNile.com for about $9,000, a fraction of the cost of Angelina's ring.
Here's our favorite look alike;
This one is on sale now for under $2,000 (retail price $4,468). It's a 1.6 ct. emerald cut..
Here are two more rings for under $50 that could pass for lookalikes to Jolie's engagement ring;
And three other rings under $1,000 that look like her emerald cut ring;
And to complement the look-alike effect, check out this excellent video tutorial on how to apply makeup to look like Angelina Jolie;