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Amethyst Stalactites

The amethyst “stalactite” is a tube agate that forms in the center of an agate/amethyst vug within a hydrothermal igneous formation.  As the chemical composition of the ground water which fills the cavity changes, the color and the denseness of the core rings change correspondingly.  Once the agate center has formed then the amethyst crystals grow on the outside surface.  Stalactites are cross cut into slices to expose both the agate center and surrounding purple crystals.  These "flowers" or sectional pieces will make stunning jewelry.