If you are on a budget, this Nic+Zoe Blazer will fit the bill. It's a fail-safe choice, while not very costly. In this price range, you can also take a look at this CeCe Blazer Jacket. It's also a popular item and won't break the bank. You might also want to consider this Jacket. The price is very reasonable, but the effect on your wardrobe will be pretty fantastic.
If you have enough to afford it, then you won't be disappointed if you check out this Akris Blazer. It's an expensive but smart option. While you're at it, also have a look at this Dolce & Gabbana Blazer. Yes, this item is expensive, but it does not mean it's not worth it. You can also look at this The Row Jacket. You won't regret the money spent!