It's not often the #1 piece for fall is the most affordable. This season it is, or at least, it can be if your wallet is thin. The best place to find this season's look is to raid your grandmother's jewelry box for an authentic piece with pearls and/or and richly colored gemstones or glass. Short of that, check out ebay for bargain pieces, or shop Neiman Marcus for a more extravagant jewel.