[Rockhounds] Need Quick Help

[John Scully]

Hello, All

I am in Yen The, Vietnam for two more days.  The shops are selling a new
mineral they call coban or co ban.  It is small bright blue crystals
crusted on an indeterminate matrix.  Under a loupe the crystals are
formless.  It is very pricey.  I cannot find anything out about it on
Google except that it means "cobalt" in Vietnamese.  Help!  If it really is
something desirable beyond its nice appearance, I would buy a few pieces.

Thanks
John Scully
☺