When I bought this piece, I immediateley noticed how heavy it was. My eyes were fixated on the large twinned cerussite at the top corner. It took me a while to realize that the entire matrix is covered with smaller, untwinned cerussites. This is common: you will often see twin crystals of one type or another surrounded by much smaller crystals of the same kind. And the twin, instead of being twice or maybe 4 times bigger than its untwinned bretheren, is actually much bigger than that. Also on this piece are six or seven cream colored balls of dolomite blades. This is a <u>nice</u> piece! No damage and 5.5 x 5.2 x 1 cm. Nice yellow fluorescence under long wave.