[Berlin] Jewelry Attractions

Hello, I have nothing but great from all you out
there.

Need some help again. We are going to Berlin, very exciting, but if
anyone could put in their 2cents, would love it.

Are there any finding houses, galleries, or out of the way places we
should visit, that the tourist do not go to or do not know about? I
will have 3 days by myself, so do I go on a day tours, or explore on
my own? Flea markets, festivals could be fun. Will be in Berlin the
first part of Oct., hope the weather is good.

Thank you, Jill