Luxury jeweler Harry Winston has joined De Beers and others in bringing their wares online. This is the first time that Harry Winston jewelry has been available online. The Harry Winston online salon showcases diamond jewelry including rings, watches, bracelets and cufflinks. One of the most expensive is this stunning necklace from the Harry Winston sunflower collection. The center stone of each flower is surrounded by eight round brilliant diamonds set in platinum. It is approximately 25.8 carats and sells for $135,000.