Amethyst Quartz

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Some of the best Amethysts in the world came from the far region of Amatlitán, Guerrero in Mexico. The crystals from Guerrero are larger around the lower and middle part, tapering towards the ends, a good way to generally distinguish them from the locality of Veracruz, also in Mexico. This a good sample from this mineral deposit. It is composed of a main large transparent crystal accompanied by other Amethyst smaller crystals. The colour is a deep reddish purple. The crystals show an excellent clarity with phantoms of colour along the prisms and with reflecting fluid inclusions. The cause of that colour is those Fe3+ atoms substituting for some silicon atoms. This one is an excellent Guerrero Amethyst suitable for a demanding mineral collector. No damage.