Jewelry woes

I am the worst at wearing jewelry.  I always go for my pearl earrings and simple gold necklace...everyday.  I am trying to make an effort to be more adventurous in the jewelry department, but I think baby steps are in order.  I'm thinking of purchasing one statement necklace and one cocktail ring for starters.  If I can successfully incorporate those items into my wardrobe, I'll expand from there.  What I need from you all, dear readers, is to help me choose.  I need to narrow down these items to one necklace and one ring.  What do you think of the following?  Any other suggestions of places to look?

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Also see this topaz stone necklace and this tangled chain necklace.
(Sorry, I couldn't get the images to load properly...darn Flash!)

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Help!