Banded (Chevron) Amethyst Crystals

Grade A banded amethyst crystals from South Africa.  Although known as banded amethyst in the United Kingdom this stone tends to be known as chevron amethyst in many other parts of the world. 

Amethyst is the purple variety of the mineral quartz.  Stones often exhibit different shades of colour within the same crystal.  Banded amethyst is an extreme example of this characteristic.

The varying shades of purple come from impurities of iron.  Heat usually from natural radiation initiates the change in colour.

The white sections in banded amethyst are milky quartz.  This greyish-white colour is caused by microscopic impurities of fluids that became trapped during the crystal's formation.  If it weren't for the impurities milky quartz would be colourless and transparent.

These grade A banded amethyst crystals are classed as a medium sized tumbled stone.  Sizes can vary from piece to piece so we've split them into small and medium.

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