RAB

[ronnie]

No: HPFGUIDX 171663

I don't know if anyone already said this:
When I first read HBP my first guess was that RAB is regulus black. 
However I have a differnet theory now, and I want to ask you to 
comment on in:
I think RAB might be Burkes from Borgin& Burkes. We never hear of 
Burkes, and we know the locket was stollen by TR when he was still 
working for B&B. I think the necklace seen at B&B by Hermione, might 
be the celebrated locket of Slytherin (and hence a former horcrux). 
That is the reason for the unreasonable price.  
I'm not sure, but I think Hermione is mistaken at recognizing it as 
the same necklace in the Katie Bell scene.