How Are Amethyst Made

Thousands of places around the globe. The first step in the natural process that creates amethyst geodes is the formation of gas cavities in lava. The gas cavities can form from bubbles. Some scientists imagine that the cavities can also be formed

when cooling lava flows near tree roots or other things sticking out of the ground. The cooling lava hardens completely before filling in around the boulder, creating a cavity.The cavities then fill up with a liquid that contains small amounts of iron. Over time, this liquid forms crystals of amethyst. Crystals with a color that range from light lilac to deep purple are formed when there is a trace of iron in the liquid, resulting in amethyst geodes.

geodes.

Not even scientists are 100 percent sure exactly how amethyst geodes form.They're rocks that seem plain on the outside but when opened reveal a cavity in the middle filled with beautiful crystals. The general scientific agreement is that amethyst geodes are created in a two-step process. First, there's the formation of the cavity and then the formation of the crystals.

An amethyst geode is a hollow rock with amethyst crystals lining the inner walls, so first the cavity must be formed. This can happen anywhere there is or was lava close to the earth's surface. As a result, amethyst geodes can be found in thousands of places around the globe. The first step in the natural process that creates amethyst geodes is the formation of gas cavities in lava. The gas cavities can form from bubbles. Some scientists imagine that the cavities can also be formed when cooling lava flows near tree roots or other things sticking out of the ground. The cooling lava hardens completely before filling in around the boulder, creating a cavity 

Amethyst is a well known mineral and gemstone. It is the purple variety of the mineral Quartz, and its most valuable and prized variety. Its name derives from the Greek "amethystos", which means "not drunken", as Amethyst in antiquity was thought to ward off drunkenness. The color of some Amethyst specimens from certain localities slowly fade upon prolonged exposure to light. When used as a gemstone, Amethyst is often heat treated to deepen the color, or to transform it into Citrine. Some varieties may also change to a light green color, which is given the trade name "Prasiolite", or "Green Amethyst", as it is more commonly known in the gem trade. Amethyst is most prevalent as small stubby pyramidal crystals, although several localities such as the Mexican occurrences are well-known for producing elegantly tall prismatic crystals, which are very highly regarded by collectors. Amethyst also forms the internal lining of geodes, some of which can be over 10 feet tall and weighing several tons

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Public - 6/22/16, 1:29 PM