If you're after a thrifty option, your best bet is this Rag & Bone Blazer Jacket. It's a popular piece, while not very costly. Another wonderful option is this Joie Jacket. While the price is rather reasonable, be sure that this item will become an excellent addition to your wardrobe. You may also want to look at this Eileen Fisher Blazer. This item is not expensive either, but it will make a difference in your wardrobe.
If you can afford to splurge, then what you're looking for is this Stella McCartney Blazer. It's more expensive but worth your money. While you're at it, also have a look at this The Row Blazer. Yes, this item is expensive, but it does not mean it's not worth it. And one more item you might be interested in is this Escada Blazer. 'Cause you deserve nothing but all the finer things!