I am interested in an ebay offering of this crystal, but I can't picture the size. Does anyone have a comparison scale for this? I know carat is weight not size. Topaz is a dense material if this helps any. So, is this stone the size of a standard jelly bean, jelly bellybean, average pea, BB, or the size of this o? You have to be careful about these things. The stones offered look like they would knock out a hippopotomus if thrown, but we all know the wonders of macrophotography, hmmm?