This page is different from the other pages. This has only Baltic amber with spiders. Sometimes there are other animals, but all pieces have at least one spider in them.
Large chunk, 63.9 grams of amber. The shape is curved (probably the curve of the tree trunk). There is a spider here, but also much, much more. I would say that it is difficult to see all that I describe, but it can be found. There is an Isopteran, part of a web, 7 fungus gnats, Mycetophilidae, 1 gnat, Chironomidae, a mite(?), and a termite, Rhinotermitidae. (Buying this just for the weight of amber is a good deal.)