If you're a frugal shopper, this Elizabeth Koh Scarf will fit the bill. It's a popular choice, while not very expensive. Another wonderful option is this Scarf. While the price is competitive, be sure that this item will become a great addition to your wardrobe.
If you're willing to splurge, then you won't be disappointed if you check out this Tom Ford Scarf. It's a costly but smart option.