An unusually rich topaz specimen, from un a usual location in far eastern Russia, near the more well known Dal'Negorsk localities.  You don't often see clusters of topaz like this-- from most localities you will typically see more isolated crystals.  There are a couple spots of damage, notably near the cluster of larger crystals, but unless you are looking closely this gets lost in all the topaz.  There are a couple small ferberite crystals not he piece as well. Hard to find material.