The recent influx of superb Chinese bournonite crystals have put them on a par with the classic old "cog wheel" specimens from the Herodsfoot Mine in Cornwall, England. This spear-like, bright metallic, sharply terminated crystal, is something that would have been $5000 from bolivia or england and China is temporarily producing on the cheap now...a good investment, I think! It is contacted on back, but SO sharp and displayable...