I believe that the Niessing gallery that was on Madison Ave is now
closed.- But, there are about 8 other places in the US that carry
bits of the Niessing line. If these galleries do not have what you
are looking for at the time, anything that Niessing produces can be
ordered from Germany via the galleries.
They also have a website: www.niessing com. They are very good
people to deal with as well as providing amazing craftsmanship and
I have the original platinum tension ring from them that I wouldn’t
trade for the world. They are truely beautiful pieces.