Like the "It" bag and status shoes, designers have turned the necklace into a statement piece -- and a consistent revenue source.

Since the early 2000s, necklaces from Lanvin and Vera Wang to Prada have taken on more and more heft with each passing season. The unapologetically chunky jewelry , featuring stacked, oversized beads and pendants, can offset minimalist or demure designs. Another sales appeal: It's more likely to be more comfortable, and sometimes less overtly recognizable, than the season's "It" heels (just look to Prada's stumbling shoes for spring).

With the Spring 2009 runway shows halfway over, variations on large, bulky neck charms have so far appeared in collections from Marc Jacobs, Bottega Veneta and Roberto Cavalli to Burberry and Marni.

From the looks of it, big, attention-grabbing jewelry will grace necklines for seasons to come. Consider it a fashion investment?

Click to view a short timeline of runway necklaces.