Amethyst from other countries
typical crystal from Brazil ( from a geode )
elongated crystal from Sonora , Mexico
Dow crystal from Zambia . Outer surface frosted but facetable interior.
Ametrine , A combination of amethyst & citrine.  Broken facet rough BRAZIL
Brazil :
To the left is the usual crystal found in
the geodes & is typical.
To the right is a crystal from a small
mine. It appears so dark purple
as to look black . Holding it up to a
light source reveals striking color.
Mexico :
Bolivia :  
Zambia :
Vera Cruz , Mexico