The meaning of the new cover (U.S. version)

[Amy Klein]

No: HPFGUIDX 171835

Maeg wrote:          

I just stumbled across a much larger picture of the cover:

http://www.beyondhogwarts.com/harry-potter/gallery.dhusfull.html

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I was looking at this enlarged poster and I noticed something I 
did not see before....Harry is wearing a necklace that we have 
never heard of before.  It almost looks like a leaf.  

Another thing I noticed from a smaller picture is that neither 
of them have a wand?  If they are supposedly to fight each other 
how can they do so in the wizarding world without a wand?

Curiously yours,

Amy