Full View of UK HBP cover. SPOILER...

[Angel Lima]

No: HPFGUIDX 130444

>  ~*S*~
>  ~*P*~
>  ~*O*~
>  ~*I*~
>  ~*L*~
>  ~*E*~
>  ~*R*~
> 
> 
>  SPACE
>  ************************************************
> <snip>
> Chancie again:
> I also wanted to add, that there are two hands connected
> by what looks like a rope of fire, and just above the
> title located on the spine, there is a ring.

> Inkling:
> By chance I spent a good part of this morning looking through 
> an illustrated book on the Grail Legends and when I saw the 
> full UK cover I nearly fell off my chair.

A ring? I nearly fell off my chair too, inkling :) though for a different reason, no doubt. I think this is my second if not first post, so bear with me folks, if you please. :)

The ring seems to hold an amethyst stone...to me.

Not only is Amethyst known to protect (Harry waiting under the 
shade of a lilac tree for Dudley OotP) mainly the mind (from legilimens and Harry/Voldy link perhaps. Dumbledore often wears purple - even his pajamas are purple) it is also known to induce visions.  Most common amethyst ring bearers like bishops wear it 
for such reasons.

Amethyst also represents transformation. A change from what one 
was. Tonks the animorphmagi's hair is described as a violent shade 
of violet. Harry is continually changing but he's still a way to 
go, perhaps.

Amethyst also heals or straightens maladies to do with the third 
eye (divination?) and crown (thoughts/memories/scar?). Now it 
could mean Dumbledore or whoever gives Harry the ring to clear
his spiritual/mental blockages so they could visit Harry's memory 
in the pensieve of the events at GH, or the ring is given to 
unleash Harry's mental prowess, he could well be a seer, or at 
least gauge Voldy's plans, and this is a terrible stretch I know...
but I think it could heal his scar - of its link to Voldemort (whereby Harry would lose the ability to speak parseltongue as well as feel Voldy's emotions etc)...if not physically as well. 

The amethyst in elixir form is used mainly to treat skeletal 
ailments (Remus?) but also against heart problems etc.

Arm-wrestle
My muggle mind sees it as Harry and Snape finally getting down with the get down ha!

Pensieve
Definitely a pensieve IMO, in the girl's bathroom at the entrance 
to the chamber of secrets for that chamber most definitely holds 
more than one secret. We're gonna be seeing Slythy again in some form, so it makes sense Gryffy makes an appearance also.

"Angel Lima"