Creestal

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A creestal o amethyst quartz.

A creestal or crystalline solid is a solit material whase consteetuent atoms, molecules, or ions are arranged in an ordered pattern extendin in aw three spatial dimensions. In addeetion tae thair microscopic structur, lairge creestals are uisually identifiable bi thair macroscopic geometrical shape, conseestin o flat faces wi specific, chairacteristic orientations.