Presentation :
Etymology: from the Greek "barrus" = heavy, due to its high density.
Its genesis is mainly hydrothermal. It consists of barium, a crumb of lead, a hint of calcium and may co...
Presentation :
Names) :
Amethyst and Ametrine (variety of quartz).
Etymology:
Amethyst: From the Greek amethustos = which protects from drunkenness.
Ametrine: Contraction of ...
Presentation :
Names) :
Amethyst and Ametrine (variety of quartz).
Etymology:
Amethyst: From the Greek amethustos = which protects from drunkenness.
Ametrine: Contraction of A...
Presentation :
Names) :
Amethyst and Ametrine (variety of quartz).
Etymology:
Amethyst: From the Greek amethustos = which protects from drunkenness.
Ametrine: Contraction of A...
